diff --git a/source3/libsmb/clikrb5.c b/source3/libsmb/clikrb5.c
index 20d0906e713..8b89763c3f1 100644
--- a/source3/libsmb/clikrb5.c
+++ b/source3/libsmb/clikrb5.c
@@ -23,7 +23,7 @@
 
 #ifdef HAVE_KRB5
 
-#ifndef KRB5_SET_REAL_TIME
+#ifndef HAVE_KRB5_SET_REAL_TIME
 /*
  * This function is not in the Heimdal mainline.
  */