diff --git a/include/circt/Dialect/Calyx/CalyxInterfaces.td b/include/circt/Dialect/Calyx/CalyxInterfaces.td
index 46fcca5bd2f0..f743c525c0c0 100644
--- a/include/circt/Dialect/Calyx/CalyxInterfaces.td
+++ b/include/circt/Dialect/Calyx/CalyxInterfaces.td
@@ -119,7 +119,7 @@ def CellOpInterface : OpInterface<"CellInterface"> {
       /*defaultImplementation=*/[{
         SmallVector<circt::calyx::PortInfo> ports;
         MLIRContext* context = $_op->getContext();
-        auto zippedPortInfo = llvm::zip(
+        auto zippedPortInfo = llvm::zip_equal(
           $_op->getResults(),
           $_op.portDirections(),
           $_op.portNames(),