diff --git a/configure b/configure
index 05565a83..d6bbd7da 100755
--- a/configure
+++ b/configure
@@ -13,7 +13,7 @@ fi
 
 # Warn about stuff, disable stupid warnings, be 8-bit clean for utf8.
 [ "${CFLAGS/-funsigned-char//}" == "$CFLAGS" ] &&
-  CFLAGS+=" -Wall -Wundef -Werror=implicit-function-declaration -Wno-char-subscripts -Wno-pointer-sign -Wno-string-plus-int -funsigned-char"
+  CFLAGS+=" -Wall -Wundef -Werror=implicit-function-declaration -Wno-char-subscripts -Wno-pointer-sign -funsigned-char"
 
 # Set default values if variable not already set
 : ${CC:=cc} ${HOSTCC:=cc} ${GENDIR:=generated} ${KCONFIG_CONFIG:=.config}
diff --git a/scripts/portability.sh b/scripts/portability.sh
index dafde260..60c1d4b9 100644
--- a/scripts/portability.sh
+++ b/scripts/portability.sh
@@ -22,6 +22,10 @@ else
   : ${LDOPTIMIZE:=-Wl,--gc-sections -Wl,--as-needed} ${STRIP:=strip -s -R .note* -R .comment}
 fi
 
+# Disable a pointless warning only clang produces
+[ -n "$("$CROSS_COMPILE"cc --version | grep -w clang)" ] &&
+  CFLAGS+=" -Wno-string-plus-int"
+
 # Address Sanitizer
 if [ ! -z "$ASAN" ]; then
   # Turn ASan on and disable most optimization to get more readable backtraces.