diff --git a/lib/vquic/vquic.c b/lib/vquic/vquic.c
index 7c0cc6df2a..06ab9f4e15 100644
--- a/lib/vquic/vquic.c
+++ b/lib/vquic/vquic.c
@@ -67,7 +67,7 @@ CURLcode Curl_qlogdir(struct Curl_easy *data,
       result = Curl_dyn_add(&fname, hex);
     }
     if(!result)
-      result = Curl_dyn_add(&fname, ".qlog");
+      result = Curl_dyn_add(&fname, ".sqlog");
 
     if(!result) {
       int qlogfd = open(Curl_dyn_ptr(&fname), QLOGMODE,