diff --git a/prism_compile.c b/prism_compile.c
index d744f435069434..dcc0d38bd4c1eb 100644
--- a/prism_compile.c
+++ b/prism_compile.c
@@ -2327,7 +2327,7 @@ pm_compile_node(rb_iseq_t *iseq, const pm_node_t *node, LINK_ANCHOR *const ret,
                 return;
             }
             COMPILE_ERROR(ERROR_ARGS "Invalid break");
-            rb_bug("");
+            rb_bug("Invalid break");
         }
         return;
       }