diff --git a/libavformat/hls.c b/libavformat/hls.c
index 584f658fe4..8fc6924c90 100644
--- a/libavformat/hls.c
+++ b/libavformat/hls.c
@@ -799,7 +799,7 @@ static int parse_playlist(HLSContext *c, const char *url,
                 key_type = KEY_AES_128;
             if (!strcmp(info.method, "SAMPLE-AES"))
                 key_type = KEY_SAMPLE_AES;
-            if (!strncmp(info.iv, "0x", 2) || !strncmp(info.iv, "0X", 2)) {
+            if (!av_strncasecmp(info.iv, "0x", 2)) {
                 ff_hex_to_data(iv, info.iv + 2);
                 has_iv = 1;
             }