diff --git a/libass/ass.c b/libass/ass.c
index 1df33e0ee2..14f6c1587e 100644
--- a/libass/ass.c
+++ b/libass/ass.c
@@ -647,17 +647,17 @@ static int process_fonts_line(ass_track_t* track, char *str)
 */ 
 static int process_line(ass_track_t* track, char *str)
 {
-	if (!strncmp(str, "[Script Info]", 13)) {
+	if (!strncasecmp(str, "[Script Info]", 13)) {
 		track->parser_priv->state = PST_INFO;
-	} else if (!strncmp(str, "[V4 Styles]", 11)) {
+	} else if (!strncasecmp(str, "[V4 Styles]", 11)) {
 		track->parser_priv->state = PST_STYLES;
 		track->track_type = TRACK_TYPE_SSA;
-	} else if (!strncmp(str, "[V4+ Styles]", 12)) {
+	} else if (!strncasecmp(str, "[V4+ Styles]", 12)) {
 		track->parser_priv->state = PST_STYLES;
 		track->track_type = TRACK_TYPE_ASS;
-	} else if (!strncmp(str, "[Events]", 8)) {
+	} else if (!strncasecmp(str, "[Events]", 8)) {
 		track->parser_priv->state = PST_EVENTS;
-	} else if (!strncmp(str, "[Fonts]", 7)) {
+	} else if (!strncasecmp(str, "[Fonts]", 7)) {
 		track->parser_priv->state = PST_FONTS;
 	} else {
 		switch (track->parser_priv->state) {