diff --git a/libavfilter/vf_drawtext.c b/libavfilter/vf_drawtext.c
index 994eea3c0c..d119251712 100644
--- a/libavfilter/vf_drawtext.c
+++ b/libavfilter/vf_drawtext.c
@@ -840,7 +840,7 @@ static int draw_glyphs(DrawTextContext *s, AVFrame *frame,
             continue;
 
         dummy.code = code;
-        glyph = av_tree_find(s->glyphs, &dummy, (void *)glyph_cmp, NULL);
+        glyph = av_tree_find(s->glyphs, &dummy, glyph_cmp, NULL);
 
         if (glyph->bitmap.pixel_mode != FT_PIXEL_MODE_MONO &&
             glyph->bitmap.pixel_mode != FT_PIXEL_MODE_GRAY)