1 files changed, 3 insertions, 0 deletions
diff --git a/src/ir.cpp b/src/ir.cpp
index 6e424980f8..9ba01d1411 100644
--- a/src/ir.cpp
+++ b/src/ir.cpp
@@ -16053,6 +16053,9 @@ static TypeTableEntry *ir_analyze_instruction_enum_tag_name(IrAnalyze *ira, IrIn
     assert(target->value.type->id == TypeTableEntryIdEnum);
 
     if (instr_is_comptime(target)) {
+        type_ensure_zero_bits_known(ira->codegen, target->value.type);
+        if (type_is_invalid(target->value.type))
+            return ira->codegen->builtin_types.entry_invalid;
         TypeEnumField *field = find_enum_field_by_tag(target->value.type, &target->value.data.x_bigint);
         ConstExprValue *array_val = create_const_str_lit(ira->codegen, field->name);
         ConstExprValue *out_val = ir_build_const_from(ira, &instruction->base);