diff --git a/libsrc/interface/CMakeLists.txt b/libsrc/interface/CMakeLists.txt
index ef52c30b..cb460fae 100644
--- a/libsrc/interface/CMakeLists.txt
+++ b/libsrc/interface/CMakeLists.txt
@@ -9,9 +9,7 @@ add_library(interface ${NG_LIB_TYPE}
 
 if(NOT WIN32)
     target_link_libraries(interface mesh csg geom2d)
-    if(USE_GUI)
-        target_link_libraries(interface visual)
-    endif(USE_GUI)
+    target_link_libraries(interface visual)
     install( TARGETS interface ${NG_INSTALL_DIR})
 endif(NOT WIN32)
 
diff --git a/libsrc/occ/CMakeLists.txt b/libsrc/occ/CMakeLists.txt
index 2f10e54e..831a3875 100644
--- a/libsrc/occ/CMakeLists.txt
+++ b/libsrc/occ/CMakeLists.txt
@@ -4,13 +4,17 @@ add_library(occ ${NG_LIB_TYPE}
         Partition_Loop.cxx Partition_Loop2d.cxx Partition_Loop3d.cxx Partition_Spliter.cxx 
         occconstruction.cpp occgenmesh.cpp occgeom.cpp occmeshsurf.cpp python_occ.cpp
         )
-
-add_library(occvis ${NG_LIB_TYPE} vsocc.cpp)
+if(USE_GUI)
+        add_library(occvis ${NG_LIB_TYPE} vsocc.cpp)
+endif(USE_GUI)
 
 if(NOT WIN32)
     target_link_libraries( occ ${OCC_LIBRARIES} ${PYTHON_LIBRARIES})
-    target_link_libraries( occvis occ )
-    install( TARGETS occ occvis ${NG_INSTALL_DIR})
+    install( TARGETS occ ${NG_INSTALL_DIR})
+    if (USE_GUI)
+        target_link_libraries( occvis occ )
+        install( TARGETS occvis ${NG_INSTALL_DIR})
+    endif(USE_GUI)
 endif(NOT WIN32)
 
 install(FILES