diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index 458bb5f9a4..589eb18899 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -8605,7 +8605,10 @@ qemuDomainGetStorageSourceByDevstr(const char *devstr,
         goto cleanup;
     }
 
-    src = virStorageFileChainLookup(disk->src, NULL, NULL, idx, NULL);
+    if (idx == 0)
+        src = disk->src;
+    else
+        src = virStorageFileChainLookup(disk->src, NULL, NULL, idx, NULL);
 
  cleanup:
     VIR_FREE(target);