1 files changed, 1 insertions, 1 deletions
diff --git a/src/binaryen-c.h b/src/binaryen-c.h
index 853f185e3..7511a65a4 100644
--- a/src/binaryen-c.h
+++ b/src/binaryen-c.h
@@ -110,7 +110,7 @@ BINARYEN_API BinaryenType BinaryenTypeUnreachable(void);
 // the API figure out the type instead of providing one.
 BINARYEN_API BinaryenType BinaryenTypeAuto(void);
 BINARYEN_API BinaryenType BinaryenTypeCreate(BinaryenType* valueTypes,
-                                             uint32_t numTypes);
+                                             BinaryenIndex numTypes);
 BINARYEN_API uint32_t BinaryenTypeArity(BinaryenType t);
 BINARYEN_API void BinaryenTypeExpand(BinaryenType t, BinaryenType* buf);