diff --git a/libavcodec/jpeg2000dwt.c b/libavcodec/jpeg2000dwt.c
index 8092297b8c..17d81dc56f 100644
--- a/libavcodec/jpeg2000dwt.c
+++ b/libavcodec/jpeg2000dwt.c
@@ -531,7 +531,7 @@ static void dwt_decode97_int(DWTContext *s, int32_t *t)
     }
 
     for (i = 0; i < w * h; i++)
-        data[i] = (data[i] + ((1<<I_PRESHIFT)>>1)) >> I_PRESHIFT;
+        data[i] = (data[i] + ((1LL<<I_PRESHIFT)>>1)) >> I_PRESHIFT;
 }
 
 int ff_jpeg2000_dwt_init(DWTContext *s, int border[2][2],