diff --git a/src/AstGen.zig b/src/AstGen.zig
index c79d74fdd949407f12601a590b10548317d56f98..72839521fed3a1eff5b1bc2380043922d081ffb7 100644
--- a/src/AstGen.zig
+++ b/src/AstGen.zig
@@ -3558,6 +3558,10 @@ fn structDeclInner(
         const field_name = try astgen.identAsString(member.ast.name_token);
         fields_data.appendAssumeCapacity(field_name);
 
+        if (member.ast.type_expr == 0) {
+            return astgen.failTok(member.ast.name_token, "struct field missing type", .{});
+        }
+
         const field_type: Zir.Inst.Ref = if (node_tags[member.ast.type_expr] == .@"anytype")
             .none
         else