diff --git a/ProcessLib/HT/CreateHTProcess.cpp b/ProcessLib/HT/CreateHTProcess.cpp
index 192a112b5d1357473a9a27666da5a4cb009195c4..68941ed6d9ac9163e6c35e57320ab3e7b6d0b135 100644
--- a/ProcessLib/HT/CreateHTProcess.cpp
+++ b/ProcessLib/HT/CreateHTProcess.cpp
@@ -70,11 +70,11 @@ std::unique_ptr<Process> createHTProcess(
 
     DBUG("Create HTProcess.");
 
-    auto const staggered_scheme =
+    auto const coupling_scheme =
         //! \ogs_file_param{prj__processes__process__HT__coupling_scheme}
         config.getConfigParameterOptional<std::string>("coupling_scheme");
     const bool use_monolithic_scheme =
-        !(staggered_scheme && (*staggered_scheme == "staggered"));
+        !(coupling_scheme && (*coupling_scheme == "staggered"));
 
     // Process variable.
 
diff --git a/ProcessLib/HydroMechanics/CreateHydroMechanicsProcess.cpp b/ProcessLib/HydroMechanics/CreateHydroMechanicsProcess.cpp
index ec6f085e20f484b134a43fca21bb66453e7892e2..fed730594f4c1c3111a5c4787ee130b47428c51d 100644
--- a/ProcessLib/HydroMechanics/CreateHydroMechanicsProcess.cpp
+++ b/ProcessLib/HydroMechanics/CreateHydroMechanicsProcess.cpp
@@ -55,11 +55,11 @@ std::unique_ptr<Process> createHydroMechanicsProcess(
         }
     }
 
-    auto const staggered_scheme =
+    auto const coupling_scheme =
         //! \ogs_file_param{prj__processes__process__HYDRO_MECHANICS__coupling_scheme}
         config.getConfigParameterOptional<std::string>("coupling_scheme");
     const bool use_monolithic_scheme =
-        !(staggered_scheme && (*staggered_scheme == "staggered"));
+        !(coupling_scheme && (*coupling_scheme == "staggered"));
 
     // Process variable.
 
diff --git a/ProcessLib/LIE/HydroMechanics/CreateHydroMechanicsProcess.cpp b/ProcessLib/LIE/HydroMechanics/CreateHydroMechanicsProcess.cpp
index 4f79279a69aa37e0189fcd06f32bdce9dcb181ec..730ae72a42e9189fbd4136e709ab145e5b447828 100644
--- a/ProcessLib/LIE/HydroMechanics/CreateHydroMechanicsProcess.cpp
+++ b/ProcessLib/LIE/HydroMechanics/CreateHydroMechanicsProcess.cpp
@@ -43,11 +43,11 @@ std::unique_ptr<Process> createHydroMechanicsProcess(
     //! \ogs_file_param{prj__processes__process__type}
     config.checkConfigParameter("type", "HYDRO_MECHANICS_WITH_LIE");
     DBUG("Create HydroMechanicsProcess with LIE.");
-    auto const staggered_scheme =
+    auto const coupling_scheme =
         //! \ogs_file_param{prj__processes__process__HYDRO_MECHANICS_WITH_LIE__coupling_scheme}
         config.getConfigParameterOptional<std::string>("coupling_scheme");
     const bool use_monolithic_scheme =
-        !(staggered_scheme && (*staggered_scheme == "staggered"));
+        !(coupling_scheme && (*coupling_scheme == "staggered"));
 
     // Process variables
     //! \ogs_file_param{prj__processes__process__HYDRO_MECHANICS_WITH_LIE__process_variables}
diff --git a/ProcessLib/PhaseField/CreatePhaseFieldProcess.cpp b/ProcessLib/PhaseField/CreatePhaseFieldProcess.cpp
index 77cad62bb234b87f58b23a2f9ecd69ed1315912f..4bc5db6b405dda9b8389dae0080cce01153e6c47 100644
--- a/ProcessLib/PhaseField/CreatePhaseFieldProcess.cpp
+++ b/ProcessLib/PhaseField/CreatePhaseFieldProcess.cpp
@@ -40,11 +40,11 @@ std::unique_ptr<Process> createPhaseFieldProcess(
     config.checkConfigParameter("type", "PHASE_FIELD");
     DBUG("Create PhaseFieldProcess.");
 
-    auto const staggered_scheme =
+    auto const coupling_scheme =
         //! \ogs_file_param{prj__processes__process__PHASE_FIELD__coupling_scheme}
         config.getConfigParameterOptional<std::string>("coupling_scheme");
     const bool use_monolithic_scheme =
-        !(staggered_scheme && (*staggered_scheme == "staggered"));
+        !(coupling_scheme && (*coupling_scheme == "staggered"));
 
     // Process variable.
 
diff --git a/ProcessLib/RichardsComponentTransport/CreateRichardsComponentTransportProcess.cpp b/ProcessLib/RichardsComponentTransport/CreateRichardsComponentTransportProcess.cpp
index b5dcc6eb0fc0e9f2af52085b8ad7352729cb9254..ae6d367d75941dd0e7642097892a3af27be0b172 100644
--- a/ProcessLib/RichardsComponentTransport/CreateRichardsComponentTransportProcess.cpp
+++ b/ProcessLib/RichardsComponentTransport/CreateRichardsComponentTransportProcess.cpp
@@ -91,11 +91,11 @@ std::unique_ptr<Process> createRichardsComponentTransportProcess(
 
     DBUG("Create RichardsComponentTransportProcess.");
 
-    auto const staggered_scheme =
+    auto const coupling_scheme =
         //! \ogs_file_param{prj__processes__process__RichardsComponentTransport__coupling_scheme}
         config.getConfigParameterOptional<std::string>("coupling_scheme");
     const bool use_monolithic_scheme =
-        !(staggered_scheme && (*staggered_scheme == "staggered"));
+        !(coupling_scheme && (*coupling_scheme == "staggered"));
 
     // Process variable.
 
diff --git a/ProcessLib/RichardsMechanics/CreateRichardsMechanicsProcess.cpp b/ProcessLib/RichardsMechanics/CreateRichardsMechanicsProcess.cpp
index 6450d47382a452ea4468fe7e2bf678f8795d30ac..0e24745a1807502782d4ab94b00e38340935ce38 100644
--- a/ProcessLib/RichardsMechanics/CreateRichardsMechanicsProcess.cpp
+++ b/ProcessLib/RichardsMechanics/CreateRichardsMechanicsProcess.cpp
@@ -69,11 +69,11 @@ std::unique_ptr<Process> createRichardsMechanicsProcess(
     config.checkConfigParameter("type", "RICHARDS_MECHANICS");
     DBUG("Create RichardsMechanicsProcess.");
 
-    auto const staggered_scheme =
+    auto const coupling_scheme =
         //! \ogs_file_param{prj__processes__process__RICHARDS_MECHANICS__coupling_scheme}
         config.getConfigParameterOptional<std::string>("coupling_scheme");
     const bool use_monolithic_scheme =
-        !(staggered_scheme && (*staggered_scheme == "staggered"));
+        !(coupling_scheme && (*coupling_scheme == "staggered"));
 
     // Process variable.
 
diff --git a/ProcessLib/TH2M/CreateTH2MProcess.cpp b/ProcessLib/TH2M/CreateTH2MProcess.cpp
index 159c44bf51becba72fe5649cc647c745c7df7664..5413266b0fb2613372f397a37f45514a0bde3a0b 100644
--- a/ProcessLib/TH2M/CreateTH2MProcess.cpp
+++ b/ProcessLib/TH2M/CreateTH2MProcess.cpp
@@ -81,11 +81,11 @@ std::unique_ptr<Process> createTH2MProcess(
     WARN("  https://gitlab.opengeosys.org/ogs/ogs/-/issues ");
     WARN(" ");
 
-    auto const staggered_scheme =
+    auto const coupling_scheme =
         //! \ogs_file_param{prj__processes__process__TH2M__coupling_scheme}
         config.getConfigParameterOptional<std::string>("coupling_scheme");
     const bool use_monolithic_scheme =
-        !(staggered_scheme && (*staggered_scheme == "staggered"));
+        !(coupling_scheme && (*coupling_scheme == "staggered"));
 
     // Process variable.
     //! \ogs_file_param{prj__processes__process__TH2M__process_variables}
diff --git a/ProcessLib/ThermoHydroMechanics/CreateThermoHydroMechanicsProcess.cpp b/ProcessLib/ThermoHydroMechanics/CreateThermoHydroMechanicsProcess.cpp
index df5bf1db7bf2fe16eb0618fb55fcfd2dd037c914..a39718111497b494593a0e53d2e847718429ac46 100644
--- a/ProcessLib/ThermoHydroMechanics/CreateThermoHydroMechanicsProcess.cpp
+++ b/ProcessLib/ThermoHydroMechanics/CreateThermoHydroMechanicsProcess.cpp
@@ -41,11 +41,11 @@ std::unique_ptr<Process> createThermoHydroMechanicsProcess(
     config.checkConfigParameter("type", "THERMO_HYDRO_MECHANICS");
     DBUG("Create ThermoHydroMechanicsProcess.");
 
-    auto const staggered_scheme =
+    auto const coupling_scheme =
         //! \ogs_file_param{prj__processes__process__THERMO_HYDRO_MECHANICS__coupling_scheme}
         config.getConfigParameterOptional<std::string>("coupling_scheme");
     const bool use_monolithic_scheme =
-        !(staggered_scheme && (*staggered_scheme == "staggered"));
+        !(coupling_scheme && (*coupling_scheme == "staggered"));
 
     // Process variable.
 
diff --git a/ProcessLib/ThermoMechanics/CreateThermoMechanicsProcess.cpp b/ProcessLib/ThermoMechanics/CreateThermoMechanicsProcess.cpp
index 70448dcd42322d405e88d3a663e9dd33b928eac7..38d42f1f55c688ee47e8c689470b4d2d1c906c0a 100644
--- a/ProcessLib/ThermoMechanics/CreateThermoMechanicsProcess.cpp
+++ b/ProcessLib/ThermoMechanics/CreateThermoMechanicsProcess.cpp
@@ -57,11 +57,11 @@ std::unique_ptr<Process> createThermoMechanicsProcess(
     config.checkConfigParameter("type", "THERMO_MECHANICS");
     DBUG("Create ThermoMechanicsProcess.");
 
-    auto const staggered_scheme =
+    auto const coupling_scheme =
         //! \ogs_file_param{prj__processes__process__THERMO_MECHANICS__coupling_scheme}
         config.getConfigParameterOptional<std::string>("coupling_scheme");
     const bool use_monolithic_scheme =
-        !(staggered_scheme && (*staggered_scheme == "staggered"));
+        !(coupling_scheme && (*coupling_scheme == "staggered"));
 
     // Process variable.
 
diff --git a/ProcessLib/ThermoRichardsFlow/CreateThermoRichardsFlowProcess.cpp b/ProcessLib/ThermoRichardsFlow/CreateThermoRichardsFlowProcess.cpp
index 2ac2c523e5a9acf0e36b8f32d8812a24cce69e4a..8403fb41ce94da49449eb121131217e9b5daecda 100644
--- a/ProcessLib/ThermoRichardsFlow/CreateThermoRichardsFlowProcess.cpp
+++ b/ProcessLib/ThermoRichardsFlow/CreateThermoRichardsFlowProcess.cpp
@@ -83,11 +83,11 @@ std::unique_ptr<Process> createThermoRichardsFlowProcess(
     config.checkConfigParameter("type", "THERMO_RICHARDS_FLOW");
     DBUG("Create ThermoRichardsFlowProcess.");
 
-    auto const staggered_scheme =
+    auto const coupling_scheme =
         //! \ogs_file_param{prj__processes__process__THERMO_RICHARDS_FLOW__coupling_scheme}
         config.getConfigParameterOptional<std::string>("coupling_scheme");
     const bool use_monolithic_scheme =
-        !(staggered_scheme && (*staggered_scheme == "staggered"));
+        !(coupling_scheme && (*coupling_scheme == "staggered"));
 
     // Process variable.
 
diff --git a/ProcessLib/ThermoRichardsMechanics/CreateThermoRichardsMechanicsProcess.cpp b/ProcessLib/ThermoRichardsMechanics/CreateThermoRichardsMechanicsProcess.cpp
index d63703b41c14e969b0e022f409d5ebf0540bb98a..dc112ad08df295ec40fe2ba7a750aae8d63ba6ca 100644
--- a/ProcessLib/ThermoRichardsMechanics/CreateThermoRichardsMechanicsProcess.cpp
+++ b/ProcessLib/ThermoRichardsMechanics/CreateThermoRichardsMechanicsProcess.cpp
@@ -85,11 +85,11 @@ std::unique_ptr<Process> createThermoRichardsMechanicsProcess(
     config.checkConfigParameter("type", "THERMO_RICHARDS_MECHANICS");
     DBUG("Create ThermoRichardsMechanicsProcess.");
 
-    auto const staggered_scheme =
+    auto const coupling_scheme =
         //! \ogs_file_param{prj__processes__process__THERMO_RICHARDS_MECHANICS__coupling_scheme}
         config.getConfigParameterOptional<std::string>("coupling_scheme");
     const bool use_monolithic_scheme =
-        !(staggered_scheme && (*staggered_scheme == "staggered"));
+        !(coupling_scheme && (*coupling_scheme == "staggered"));
 
     // Process variable.