diff --git a/libavcodec/lcldec.c b/libavcodec/lcldec.c
index 01b4b43202..4a5a2eb799 100644
--- a/libavcodec/lcldec.c
+++ b/libavcodec/lcldec.c
@@ -89,7 +89,7 @@ static unsigned int mszh_decomp(unsigned char * srcptr, int srclen, unsigned cha
         if ((mask & (1 << (--maskbit))) == 0) {
             if (destptr + 4 > destptr_end)
                 break;
-            AV_WN32(destptr, AV_RN32(srcptr));
+            memcpy(destptr, srcptr, 4);
             srclen -= 4;
             destptr += 4;
             srcptr += 4;