diff --git a/port/port_win.h b/port/port_win.h
index 45bf2f0ea749d6..50090048228389 100644
--- a/port/port_win.h
+++ b/port/port_win.h
@@ -168,6 +168,8 @@ inline bool GetHeapProfile(void (*func)(void*, const char*, int), void* arg) {
   return false;
 }
 
+uint32_t AcceleratedCRC32C(uint32_t crc, const char* buf, size_t size);
+
 }
 }