diff --git a/src/dwarfs.cpp b/src/dwarfs.cpp
index 2430609b..e019966c 100644
--- a/src/dwarfs.cpp
+++ b/src/dwarfs.cpp
@@ -481,6 +481,9 @@ int option_hdl(void* data, const char* arg, int key,
       usage(opts->progname);
     }
     break;
+
+  default:
+    break;
   }
 
   return 1;