diff --git a/libavcodec/magicyuv.c b/libavcodec/magicyuv.c
index bc40032cac..2d5af052db 100644
--- a/libavcodec/magicyuv.c
+++ b/libavcodec/magicyuv.c
@@ -564,11 +564,11 @@ static int magy_decode_frame(AVCodecContext *avctx, AVFrame *p,
         return AVERROR_INVALIDDATA;
     }
 
+    if ((s->slice_height >> s->vshift[1]) <= s->interlaced) {
+        av_log(avctx, AV_LOG_ERROR, "impossible slice height\n");
+        return AVERROR_INVALIDDATA;
+    }
     if (s->interlaced) {
-        if ((s->slice_height >> s->vshift[1]) < 2) {
-            av_log(avctx, AV_LOG_ERROR, "impossible slice height\n");
-            return AVERROR_INVALIDDATA;
-        }
         if ((avctx->coded_height % s->slice_height) && ((avctx->coded_height % s->slice_height) >> s->vshift[1]) < 2) {
             av_log(avctx, AV_LOG_ERROR, "impossible height\n");
             return AVERROR_INVALIDDATA;