diff --git a/CMakeModules/FindOSG.cmake b/CMakeModules/FindOSG.cmake
index a87745ce3..4760fd932 100644
--- a/CMakeModules/FindOSG.cmake
+++ b/CMakeModules/FindOSG.cmake
@@ -43,7 +43,9 @@ MACRO(FIND_OSG_LIBRARY MYLIBRARY MYLIBRARYNAME)
         ~/Library/Frameworks
         /Library/Frameworks
         /usr/local/lib
+        /usr/local/lib64
         /usr/lib
+        /usr/lib64
         /sw/lib
         /opt/local/lib
         /opt/csw/lib
@@ -72,7 +74,9 @@ MACRO(FIND_OSG_LIBRARY MYLIBRARY MYLIBRARYNAME)
         ~/Library/Frameworks
         /Library/Frameworks
         /usr/local/lib
+        /usr/local/lib64
         /usr/lib
+        /usr/lib64
         /sw/lib
         /opt/local/lib
         /opt/csw/lib