diff --git a/windows/winstore.c b/windows/winstore.c
index 3b80e147..a57cd357 100644
--- a/windows/winstore.c
+++ b/windows/winstore.c
@@ -454,7 +454,7 @@ void store_host_key(const char *hostname, int port,
 	RegCloseKey(rkey);
     } /* else key does not exist in registry */
 
-    sfree(regname);
+    strbuf_free(regname);
 }
 
 /*