diff --git a/intern/guardedalloc/CMakeLists.txt b/intern/guardedalloc/CMakeLists.txt
index 7f648cff27c..3cec2fd1016 100644
--- a/intern/guardedalloc/CMakeLists.txt
+++ b/intern/guardedalloc/CMakeLists.txt
@@ -54,7 +54,7 @@ if(WIN32 AND NOT UNIX)
 endif()
 
 # Jemalloc 5.0.0+ needs extra configuration.
-if(WITH_MEM_JEMALLOC AND ("${JEMALLOC_VERSION}" VERSION_GREATER_EQUAL "5.0.0"))
+if(WITH_MEM_JEMALLOC AND NOT ("${JEMALLOC_VERSION}" VERSION_LESS "5.0.0"))
 	add_definitions(-DWITH_JEMALLOC_CONF)
 endif()