diff --git a/ctest.c b/ctest.c
index d12e7be99..95a5e8bb2 100644
--- a/ctest.c
+++ b/ctest.c
@@ -34,7 +34,7 @@ COMPILER_GNU
 OS_LINUX
 #endif
 
-#if defined(__FreeBSD__)
+#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
 OS_FREEBSD
 #endif