diff --git a/cmds/servicemanager/binder.c b/cmds/servicemanager/binder.c
index d1ab05f..6eecee1 100644
--- a/cmds/servicemanager/binder.c
+++ b/cmds/servicemanager/binder.c
@@ -113,7 +113,9 @@
 
     if ((ioctl(bs->fd, BINDER_VERSION, &vers) == -1) ||
         (vers.protocol_version != BINDER_CURRENT_PROTOCOL_VERSION)) {
-        fprintf(stderr, "binder: driver version differs from user space\n");
+        fprintf(stderr,
+                "binder: kernel driver version (%d) differs from user space version (%d)\n",
+                vers.protocol_version, BINDER_CURRENT_PROTOCOL_VERSION);
         goto fail_open;
     }