diff --git a/cMake/FindCoin3D.cmake b/cMake/FindCoin3D.cmake
index be10d8f55..0a83a2fd8 100644
--- a/cMake/FindCoin3D.cmake
+++ b/cMake/FindCoin3D.cmake
@@ -73,6 +73,7 @@ ELSE (WIN32)
   FIND_PATH(COIN3D_INCLUDE_DIRS Inventor/So.h
     /usr/include/Coin3
     /usr/include
+    /usr/include/coin
     /usr/local/include
   )
 
diff --git a/cMake/FindOpenCasCade.cmake b/cMake/FindOpenCasCade.cmake
index 5aa0a8e66..a5229f8bf 100644
--- a/cMake/FindOpenCasCade.cmake
+++ b/cMake/FindOpenCasCade.cmake
@@ -67,6 +67,11 @@ else(OCE_FOUND) #look for OpenCASCADE
   endif(WIN32)
   if(OCC_LIBRARY)
     GET_FILENAME_COMPONENT(OCC_LIBRARY_DIR ${OCC_LIBRARY} PATH)
+    IF(NOT OCC_INCLUDE_DIR)
+      FIND_PATH(OCC_INCLUDE_DIR Standard_Version.hxx
+        ${OCC_LIBRARY_DIR}/../inc
+      )
+    ENDIF()
   endif(OCC_LIBRARY)
 endif(OCE_FOUND)