diff --git a/server/modules/routing/binlogrouter/blr_file.c b/server/modules/routing/binlogrouter/blr_file.c
index 7e2035652..ad967ad5d 100644
--- a/server/modules/routing/binlogrouter/blr_file.c
+++ b/server/modules/routing/binlogrouter/blr_file.c
@@ -394,15 +394,18 @@ blr_file_add_magic(int fd)
  * @return              Non-zero if the fie creation succeeded
  */
 static int
-blr_file_create(ROUTER_INSTANCE *router, char *file)
+blr_file_create(ROUTER_INSTANCE *router, char *orig_file)
 {
-    if (strlen(file) > BINLOG_FNAMELEN)
+    if (strlen(orig_file) > BINLOG_FNAMELEN)
     {
         MXS_ERROR("The binlog filename %s is longer than the maximum allowed length %d.",
-                  file, BINLOG_FNAMELEN);
+                  orig_file, BINLOG_FNAMELEN);
         return 0;
     }
 
+    char file[strlen(orig_file) + 1];
+    strcpy(file, orig_file);
+
     int created = 0;
     char err_msg[MXS_STRERROR_BUFLEN];