diff --git a/codon/parser/visitors/typecheck/loops.cpp b/codon/parser/visitors/typecheck/loops.cpp
index 8777aa1b..d415f5e8 100644
--- a/codon/parser/visitors/typecheck/loops.cpp
+++ b/codon/parser/visitors/typecheck/loops.cpp
@@ -289,6 +289,15 @@ TypecheckVisitor::transformStaticLoopCall(
               !ctx->cache->functions[method.name].type)
             continue;
           if (method.age <= ctx->age) {
+            if (typ->getHeterogenousTuple()) {
+              auto &ast = ctx->cache->functions[method.name].ast;
+              if (ast->hasAttr("autogenerated") &&
+                  (endswith(ast->name, ".__iter__:0") ||
+                   endswith(ast->name, ".__getitem__:0"))) {
+                // ignore __getitem__ and other heterogenuous methods
+                continue;
+              }
+            }
             stmt->rhs = N<IdExpr>(method.name);
             block.push_back(wrap(stmt->clone()));
           }