diff --git a/js/src/frontend/Frontend2.cpp b/js/src/frontend/Frontend2.cpp
index 152eb6e8c1ed81cf349cb890511985e173e727d5..2722ee8e3edf1426bc50cea2a1219936d19a37ab 100644
--- a/js/src/frontend/Frontend2.cpp
+++ b/js/src/frontend/Frontend2.cpp
@@ -368,6 +368,7 @@ UniquePtr<ImmutableScriptData> ConvertImmutableScriptData(
       &fc, smooshScriptData.main_offset, smooshScriptData.nfixed,
       smooshScriptData.nslots, GCThingIndex(smooshScriptData.body_scope_index),
       smooshScriptData.num_ic_entries, isFunction, smooshScriptData.fun_length,
+      0,
       mozilla::Span(smooshScriptData.bytecode.data,
                     smooshScriptData.bytecode.len),
       mozilla::Span<const SrcNote>(), mozilla::Span<const uint32_t>(),