diff --git a/config.h.in b/config.h.in
index b91d5a38..2771d0bf 100644
--- a/config.h.in
+++ b/config.h.in
@@ -11,3 +11,8 @@
 
 /* whether rusage is enabled */
 #cmakedefine ENABLE_RUSAGE 1
+
+/* for non-RHEL kernels */
+#ifndef RHEL_RELEASE_VERSION
+#define RHEL_RELEASE_VERSION(a,b) (((a) << 8) + (b))
+#endif