1 files changed, 1 insertions, 1 deletions
diff --git a/main.cxx b/main.cxx
index 2dba179f..b5fdbc0c 100644
--- a/main.cxx
+++ b/main.cxx
@@ -768,7 +768,7 @@ main (int argc, char * const argv [])
 
         case 'r':
           if (client_options) // NB: no paths!
-            assert_regexp_match("-r parameter from client", optarg, "^[a-z0-9_\\.-]+$");
+            assert_regexp_match("-r parameter from client", optarg, "^[a-z0-9_.-]+$");
           setup_kernel_release(s, optarg);
           break;