diff --git a/kpvcrlib/CMakeLists.txt b/kpvcrlib/CMakeLists.txt
index 466793f6b..ba011329d 100644
--- a/kpvcrlib/CMakeLists.txt
+++ b/kpvcrlib/CMakeLists.txt
@@ -55,8 +55,8 @@ message("Will build crengine library")
 #SET(GUI kpv)
 #ADD_SUBDIRECTORY(crengine/crengine)
 
-ADD_DEFINITIONS(-DHAVE_PROTOTYPES=1)
-ADD_DEFINITIONS(-DHAVE_UNSIGNED_CHAR=1)
+ADD_DEFINITIONS(-DHAVE_PROTOTYPES)
+ADD_DEFINITIONS(-DHAVE_UNSIGNED_CHAR)
 ADD_DEFINITIONS(-Dmain=xxxmain)
 SET (CRENGINE_SOURCES 
 	${CRE_DIR}/src/cp_stats.cpp