diff --git a/opj_config.h.cmake.in b/opj_config.h.cmake.in
index 372a74f7..c462429b 100644
--- a/opj_config.h.cmake.in
+++ b/opj_config.h.cmake.in
@@ -1,5 +1,5 @@
 /* create config.h for CMake */
-#define PACKAGE_VERSION "@PACKAGE_VERSION@"
+#define OPJ_PACKAGE_VERSION "@PACKAGE_VERSION@"
 
 #cmakedefine HAVE_INTTYPES_H @HAVE_INTTYPES_H@
 #cmakedefine HAVE_MEMORY_H @HAVE_MEMORY_H@