diff --git a/src/core/vm.c b/src/core/vm.c
index 082297e5..0080d014 100644
--- a/src/core/vm.c
+++ b/src/core/vm.c
@@ -58,7 +58,7 @@ JANET_THREAD_LOCAL jmp_buf *janet_vm_jmp_buf = NULL;
  * a switch inside an infinite loop. For GCC/clang, we use
  * computed gotos. */
 #if defined(__GNUC__) && !defined(__EMSCRIPTEN__)
-/*#define JANET_USE_COMPUTED_GOTOS*/
+#define JANET_USE_COMPUTED_GOTOS
 #endif
 
 #ifdef JANET_USE_COMPUTED_GOTOS
@@ -291,6 +291,191 @@ static JanetSignal run_vm(JanetFiber *fiber, Janet in, JanetFiberStatus status)
         &&label_JOP_NUMERIC_GREATER_THAN,
         &&label_JOP_NUMERIC_GREATER_THAN_EQUAL,
         &&label_JOP_NUMERIC_EQUAL,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
+        &&label_unknown_op,
         &&label_unknown_op
     };
 #endif
diff --git a/test/suite7.janet b/test/suite7.janet
index 476586e5..437409f9 100644
--- a/test/suite7.janet
+++ b/test/suite7.janet
@@ -156,11 +156,11 @@
 (assert (= (|(+ $0 $1 $3 $2 $6) 0 1 2 3 4 5 6) 12) "function shorthand 9")
 
 # Simple function break
-(debug/fbreak map)
+(debug/fbreak map 1)
 (def f (fiber/new (fn [] (map inc [1 2 3])) :a))
 (resume f)
 (assert (= :debug (fiber/status f)) "debug/fbreak")
-(debug/unfbreak map)
+(debug/unfbreak map 1)
 (map inc [1 2 3])
 
 (end-suite)