diff --git a/src/osgPresentation/CMakeLists.txt b/src/osgPresentation/CMakeLists.txt
index cba4cb65c..e3238e8d7 100644
--- a/src/osgPresentation/CMakeLists.txt
+++ b/src/osgPresentation/CMakeLists.txt
@@ -1,6 +1,6 @@
 
 IF(DYNAMIC_OPENSCENEGRAPH)
-    ADD_DEFINITIONS(-DOSGSIM_LIBRARY)
+    ADD_DEFINITIONS(-DOSGPRESENTATION_LIBRARY)
 ELSE()
     ADD_DEFINITIONS(-DOSG_LIBRARY_STATIC)
 ENDIF()