diff --git a/cmake/Modules/FindERTPython.cmake b/cmake/Modules/FindERTPython.cmake
index 328fb9a68..32e1e6ef3 100644
--- a/cmake/Modules/FindERTPython.cmake
+++ b/cmake/Modules/FindERTPython.cmake
@@ -27,16 +27,16 @@ if(PYTHONINTERP_FOUND)
   if (ERT_ROOT)
       list(APPEND PATH_LIST ${ERT_ROOT})
   endif()
-  list(APPEND PATH_LIST ${CMAKE_INSTALL_PREFIX})
+  list(APPEND PATH_LIST ${CMAKE_PREFIX_PATH})
 
   # Add various popular sibling alternatives.
-  list(APPEND PATH_LIST "${PROJECT_SOURCE_DIR}/../ert/build/${PYTHON_INSTALL_PREFIX}"
-    			"${PROJECT_SOURCE_DIR}/../ert/devel/build/${PYTHON_INSTALL_PREFIX}"
-    			"${PROJECT_BINARY_DIR}/../ert-build/${PYTHON_INSTALL_PREFIX}"
-    			"${PROJECT_BINARY_DIR}/../ert/devel/${PYTHON_INSTALL_PREFIX}")
+  list(APPEND PATH_LIST "${PROJECT_SOURCE_DIR}/../ert/build"
+    			"${PROJECT_SOURCE_DIR}/../ert/devel/build"
+    			"${PROJECT_BINARY_DIR}/../ert-build"
+    			"${PROJECT_BINARY_DIR}/../ert/devel")
 
   foreach( PATH ${PATH_LIST})
-      set( python_code "import sys; sys.path.insert(0 , '${PATH}'); import os.path; import inspect; import ert; print os.path.dirname(os.path.dirname(inspect.getfile(ert)))")
+      set( python_code "import sys; sys.path.insert(0 , '${PATH}/${PYTHON_INSTALL_PREFIX}'); import os.path; import inspect; import ert; print os.path.dirname(os.path.dirname(inspect.getfile(ert)))")
       execute_process( COMMAND ${PYTHON_EXECUTABLE} -c "${python_code}"
                        RESULT_VARIABLE import_result
                        OUTPUT_VARIABLE stdout_output
diff --git a/jenkins/build-opm-module.sh b/jenkins/build-opm-module.sh
index 4867be47c..e3cf9c907 100755
--- a/jenkins/build-opm-module.sh
+++ b/jenkins/build-opm-module.sh
@@ -56,9 +56,9 @@ function build_upstreams {
   for upstream in ${upstreams[*]}
   do
     echo "Building upstream $upstream=${upstreamRev[$upstream]}"
-
     # Build upstream and execute installation
-    clone_and_build_module $upstream "-DCMAKE_PREFIX_PATH=$WORKSPACE/serial/install -DCMAKE_INSTALL_PREFIX=$WORKSPACE/serial/install" ${upstreamRev[$upstream]} $WORKSPACE/serial
+    # ENABLE_PYTHON - will build the Python wrappers for OpmParser, ignored by the other modules.
+    clone_and_build_module $upstream "-DCMAKE_PREFIX_PATH=$WORKSPACE/serial/install -DCMAKE_INSTALL_PREFIX=$WORKSPACE/serial/install -DENABLE_PYTHON=ON" ${upstreamRev[$upstream]} $WORKSPACE/serial
     test $? -eq 0 || exit 1
   done
   test $? -eq 0 || exit 1
@@ -85,7 +85,8 @@ function build_downstreams {
     # Additional cmake parameters:
     # OPM_DATA_ROOT - passed for modules having opm-data based integration tests
     # USE_QUADMATH - used by ewoms to disable quadmath support (makes tests usable)
-    clone_and_build_module $downstream "-DCMAKE_PREFIX_PATH=$WORKSPACE/serial/install -DCMAKE_INSTALL_PREFIX=$WORKSPACE/serial/install -DOPM_DATA_ROOT=$OPM_DATA_ROOT -DUSE_QUADMATH=0" ${downstreamRev[$downstream]} $WORKSPACE/serial 1
+    # ENABLE_PYTHON - will build the Python wrappers for OpmParser, ignored by the other modules.
+    clone_and_build_module $downstream "-DCMAKE_PREFIX_PATH=$WORKSPACE/serial/install -DCMAKE_INSTALL_PREFIX=$WORKSPACE/serial/install -DOPM_DATA_ROOT=$OPM_DATA_ROOT -DENABLE_PYTHON=ON -DUSE_QUADMATH=0" ${downstreamRev[$downstream]} $WORKSPACE/serial 1
     code=$?
     # ewoms skips tests in nasty ways. ignore return code
     if [ "$downstream" != "ewoms" ]