diff --git a/ProcessLib/RichardsComponentTransport/Tests.cmake b/ProcessLib/RichardsComponentTransport/Tests.cmake
index fb78a7cfa0b072aad85273b2cb5ae976ba5ed0fc..152024f48324c4285255683fe385869479b06a76 100644
--- a/ProcessLib/RichardsComponentTransport/Tests.cmake
+++ b/ProcessLib/RichardsComponentTransport/Tests.cmake
@@ -1,5 +1,15 @@
-if (NOT OGS_USE_MPI)
-    OgsTest(PROJECTFILE Parabolic/RichardsComponentTransport/Padilla/Padilla_NaCl1/Padilla_NaCl1.prj RUNTIME 7)
-    OgsTest(PROJECTFILE Parabolic/RichardsComponentTransport/Padilla/Padilla_NaCl1/Padilla_NaCl1_quadratic.prj RUNTIME 7)
-    OgsTest(PROJECTFILE Parabolic/RichardsComponentTransport/Padilla/Padilla_NaCl6/Padilla_NaCl6.prj RUNTIME 13)
+if(NOT OGS_USE_MPI)
+    # TODO: re-enable this, see #3178. OgsTest(PROJECTFILE
+    # Parabolic/RichardsComponentTransport/Padilla/Padilla_NaCl1/Padilla_NaCl1.prj
+    # RUNTIME 7)
+    OgsTest(
+        PROJECTFILE
+            Parabolic/RichardsComponentTransport/Padilla/Padilla_NaCl1/Padilla_NaCl1_quadratic.prj
+        RUNTIME 7
+    )
+    OgsTest(
+        PROJECTFILE
+            Parabolic/RichardsComponentTransport/Padilla/Padilla_NaCl6/Padilla_NaCl6.prj
+        RUNTIME 13
+    )
 endif()