1 files changed, 2 insertions, 2 deletions

diff --git a/src/wcautil/wcawrap.cpp b/src/wcautil/wcawrap.cpp
index 625489c1..7c210069 100644
--- a/src/wcautil/wcawrap.cpp
+++ b/src/wcautil/wcawrap.cpp
@@ -1000,7 +1000,7 @@ NOTE: Use WcaFreeStream() to release the byte stream
 ********************************************************************/
 extern "C" HRESULT WIXAPI WcaAllocStream(
     __deref_out_bcount_part(cbData, 0) BYTE** ppbData,
-    __in DWORD cbData
+    __in SIZE_T cbData
     )
 {
     Assert(ppbData);
@@ -1379,7 +1379,7 @@ feed a deferred CustomAction
 ********************************************************************/
 extern "C" HRESULT WIXAPI WcaWriteStreamToCaData(
     __in_bcount(cbData) const BYTE* pbData,
-    __in DWORD cbData,
+    __in SIZE_T cbData,
     __deref_inout_z_opt LPWSTR* ppwzCustomActionData
     )
 {