diff --git a/block/gluster.c b/block/gluster.c
index 63d3c37d4c..296e036b3d 100644
--- a/block/gluster.c
+++ b/block/gluster.c
@@ -665,7 +665,7 @@ static int qemu_gluster_parse(BlockdevOptionsGluster *gconf,
     if (filename) {
         ret = qemu_gluster_parse_uri(gconf, filename);
         if (ret < 0) {
-            error_setg(errp, "invalid URI");
+            error_setg(errp, "invalid URI %s", filename);
             error_append_hint(errp, "Usage: file=gluster[+transport]://"
                                     "[host[:port]]volume/path[?socket=...]"
                                     "[,file.debug=N]"
diff --git a/block/sheepdog.c b/block/sheepdog.c
index 8680b2926f..797ea5953b 100644
--- a/block/sheepdog.c
+++ b/block/sheepdog.c
@@ -1036,7 +1036,7 @@ static void sd_parse_uri(SheepdogConfig *cfg, const char *filename,
 
     cfg->uri = uri = uri_parse(filename);
     if (!uri) {
-        error_setg(&err, "invalid URI");
+        error_setg(&err, "invalid URI '%s'", filename);
         goto out;
     }