diff --git a/sys/conf/kern.mk b/sys/conf/kern.mk
index 6e6ba92c4db5..2939a59cb0b4 100644
--- a/sys/conf/kern.mk
+++ b/sys/conf/kern.mk
@@ -147,12 +147,6 @@ INLINE_LIMIT?=	8000
 #
 CFLAGS+=	-ffreestanding
 
-#
-# Do not allow a compiler to optimize out overflow checks for signed
-# types.
-#
-CFLAGS+=	-fno-strict-overflow
-
 #
 # GCC SSP support
 #