diff --git a/configure b/configure
index 7b2b74e185..2cb46c94bd 100755
--- a/configure
+++ b/configure
@@ -91,7 +91,7 @@ EOF
 function_check() {
   cat > $TMPC << EOF
 #include <$1>
-int main(void) { $2; }
+int main(void) { $2; return 0; }
 EOF
   shift
   compile_check $TMPC $@