pit: better error message

1 files changed, 1 insertions, 1 deletions

diff --git a/pit/src/runtime/eval.c b/pit/src/runtime/eval.c
index 7c64418..f62f4e8 100644
--- a/pit/src/runtime/eval.c
+++ b/pit/src/runtime/eval.c
@@ -191,7 +191,7 @@ bool pit_vm_run_one(pit_runtime *rt) {
         pit_value bindings = vm_erase_empty(rt, false);
         if (!vm_call(rt, f, args, bindings)) return false;
     } else {
-        pit_error(rt, "unknown vm operation");
+        pit_error(rt, "unrecognized vm instruction: %v", ins);
         return false;
     }
     vm_erase_empty(rt, true);