diff --git a/qrexec-lib/pack.c b/qrexec-lib/pack.c
index e5f7f19..f5885a0 100644
--- a/qrexec-lib/pack.c
+++ b/qrexec-lib/pack.c
@@ -89,7 +89,7 @@ void wait_for_result(void)
     if (hdr.error_code != 0) {
         switch (hdr.error_code) {
             case EEXIST:
-                call_error_handler("File copy: not overwriting existing file. Clean QubesIncoming dir, and retry copy%s%s", last_filename_prefix, last_filename);
+                call_error_handler("A file named %s already exists in QubesIncoming dir", last_filename);
                 break;
             case EINVAL:
                 call_error_handler("File copy: Corrupted data from packer%s%s", last_filename_prefix, last_filename);