diff --git a/CMakeLists.txt b/CMakeLists.txt
index c1a68bca..b5dc8b8c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -254,9 +254,9 @@ INSTALL( FILES ${OPENJPEG_BINARY_DIR}/OpenJPEGConfig.cmake
 
 #-----------------------------------------------------------------------------
 # install CHANGES and LICENSE
-IF(EXISTS CHANGES)
+IF(EXISTS ${OPENJPEG_SOURCE_DIR}/CHANGES)
   INSTALL(FILES CHANGES DESTINATION ${OPENJPEG_INSTALL_DOC_DIR})
-ENDIF(EXISTS CHANGES)
+ENDIF(EXISTS ${OPENJPEG_SOURCE_DIR}/CHANGES)
 INSTALL(FILES LICENSE DESTINATION ${OPENJPEG_INSTALL_DOC_DIR})
 
 INCLUDE (CMake/OpenJPEGCPack.cmake)