diff --git a/src/libnm-glib-aux/nm-ref-string.h b/src/libnm-glib-aux/nm-ref-string.h
index df37d5834b..e966aed084 100644
--- a/src/libnm-glib-aux/nm-ref-string.h
+++ b/src/libnm-glib-aux/nm-ref-string.h
@@ -118,7 +118,7 @@ static inline gboolean
 nm_ref_string_equal_str(NMRefString *rstr, const char *str)
 {
     if (!str)
-        return (!!rstr);
+        return !rstr;
 
     if (!rstr)
         return FALSE;