diff --git a/rdoff/rdflib.c b/rdoff/rdflib.c
index ab03e0b8..6a5df789 100644
--- a/rdoff/rdflib.c
+++ b/rdoff/rdflib.c
@@ -234,7 +234,7 @@ int main(int argc, char **argv)
             fprintf(stderr, "rdflib: required parameter missing\n");
             exit(1);
         }
-        break;
+        /* fall through */
     case 't':
         fp = fopen(argv[2], "rb");
         if (!fp) {