diff --git a/Makefile b/Makefile
index 97ca9d39a8e..272bae0a728 100644
--- a/Makefile
+++ b/Makefile
@@ -214,7 +214,7 @@ ${TGTS}:
 .MAIN:	all
 
 STARTTIME!= LC_ALL=C date
-CHECK_TIME!= find ${.CURDIR}/sys/sys/param.h -mtime -0
+CHECK_TIME!= find ${.CURDIR}/sys/sys/param.h -mtime -0s
 .if !empty(CHECK_TIME)
 .error check your date/time: ${STARTTIME}
 .endif