diff --git a/src/osgPlugins/pdf/CMakeLists.txt b/src/osgPlugins/pdf/CMakeLists.txt
index c27dc345e..795750654 100644
--- a/src/osgPlugins/pdf/CMakeLists.txt
+++ b/src/osgPlugins/pdf/CMakeLists.txt
@@ -1,5 +1,9 @@
 SET(TARGET_SRC ReaderWriterPDF.cpp )
 
+IF(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
+    REMOVE_CXX_FLAG(-pedantic)
+ENDIF()
+
 INCLUDE_DIRECTORIES( ${CAIRO_INCLUDE_DIRS} ${POPPLER_INCLUDE_DIRS} )
 LINK_DIRECTORIES(${CAIRO_LIBRARY_DIRS} ${POPPLER_LIBRARY_DIRS})
 SET(TARGET_EXTERNAL_LIBRARIES  ${CAIRO_LIBRARIES} ${POPPLER_LIBRARIES} )