diff --git a/configure b/configure
index bc763f95b..bc09113f1 100755
--- a/configure
+++ b/configure
@@ -18252,7 +18252,7 @@ else
 /* end confdefs.h.  */
 $ac_includes_default
 
-int main(void) { return (snprintf(NULL, 0, "test") == 5); }
+int main(void) { return !(snprintf(NULL, 0, "test") == 4); }
 
 _ACEOF
 if ac_fn_c_try_run "$LINENO"; then :
diff --git a/configure.ac b/configure.ac
index 79367280c..aa7a9f20b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1008,7 +1008,7 @@ if test "x$ac_cv_func_snprintf" = xyes; then
 	AC_MSG_CHECKING([for correct snprintf return value])
 	AC_RUN_IFELSE([AC_LANG_SOURCE(AC_INCLUDES_DEFAULT
 [[
-int main(void) { return (snprintf(NULL, 0, "test") == 5); }
+int main(void) { return !(snprintf(NULL, 0, "test") == 4); }
 ]])], [AC_MSG_RESULT(yes)], [
 		AC_MSG_RESULT(no)
 		AC_DEFINE([SNPRINTF_RET_BROKEN], [], [define if (v)snprintf does not return length needed, (but length used)])