diff --git a/lib/curlx/strparse.c b/lib/curlx/strparse.c
index 7866b2087a..3082a6740a 100644
--- a/lib/curlx/strparse.c
+++ b/lib/curlx/strparse.c
@@ -49,9 +49,14 @@ void curlx_str_trim(struct Curl_str *out, size_t len)
 int curlx_str_until(const char **linep, struct Curl_str *out,
                     const size_t max, char delim)
 {
-  const char *s = *linep;
+  const char *s;
   size_t len = 0;
-  DEBUGASSERT(linep && *linep && out && max && delim);
+  DEBUGASSERT(linep);
+  DEBUGASSERT(*linep);
+  DEBUGASSERT(out);
+  DEBUGASSERT(max);
+  DEBUGASSERT(delim);
+  s = *linep;
 
   curlx_str_init(out);
   while(*s && (*s != delim)) {