diff --git a/lib/common/bitstream.h b/lib/common/bitstream.h
index d976c5478..582f9dd72 100644
--- a/lib/common/bitstream.h
+++ b/lib/common/bitstream.h
@@ -159,7 +159,7 @@ MEM_STATIC size_t BIT_initCStream(BIT_CStream_t* bitC,
     return 0;
 }
 
-FORCE_INLINE_TEMPLATE size_t BIT_getLowerBits(size_t bitContainer, U32 const nbBits)
+FORCE_INLINE_TEMPLATE size_t BIT_getLowerBits(BitContainerType bitContainer, U32 const nbBits)
 {
 #if defined(STATIC_BMI2) && STATIC_BMI2 == 1 && !defined(ZSTD_NO_INTRINSICS)
 #  if (defined(__x86_64__) || defined(_M_X64)) && !defined(__ILP32__)