diff --git a/common/jpeg/jdhuff.c b/common/jpeg/jdhuff.c
index 9710142..cbab592 100644
--- a/common/jpeg/jdhuff.c
+++ b/common/jpeg/jdhuff.c
@@ -628,7 +628,7 @@
 
 /***************************************************************/
 
-#if __WORDSIZE == 64
+#if __WORDSIZE == 64 || defined(_WIN64)
 
 #define ENSURE_SHORT \
   if (bits_left < 16) { \