diff --git a/ProcessLib/RichardsComponentTransport/Tests.cmake b/ProcessLib/RichardsComponentTransport/Tests.cmake
index 152024f48324c4285255683fe385869479b06a76..8dfabd40dd90441266447185a1ed870aff65600b 100644
--- a/ProcessLib/RichardsComponentTransport/Tests.cmake
+++ b/ProcessLib/RichardsComponentTransport/Tests.cmake
@@ -1,15 +1,5 @@
 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
-    )
+    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()