diff --git a/libavformat/mov.c b/libavformat/mov.c
index 1f57dab89a..dc31e5a6f7 100644
--- a/libavformat/mov.c
+++ b/libavformat/mov.c
@@ -1001,7 +1001,7 @@ static int mov_read_colr(MOVContext *c, AVIOContext *pb, MOVAtom atom)
     av_dlog(c->fc, "%s: pri %d trc %d matrix %d",
             color_parameter_type, color_primaries, color_trc, color_matrix);
 
-    if (c->isom) {
+    if (strncmp(color_parameter_type, "nclx", 4) == 0) {
         uint8_t color_range = avio_r8(pb) >> 7;
         av_dlog(c->fc, " full %"PRIu8"", color_range);
         if (color_range)