diff --git a/libavformat/dashenc.c b/libavformat/dashenc.c
index 06bbf36c95..94e77c7b8c 100644
--- a/libavformat/dashenc.c
+++ b/libavformat/dashenc.c
@@ -551,7 +551,7 @@ static void write_hls_media_playlist(OutputStream *os, AVFormatContext *s,
     for (i = start_index; i < os->nb_segments; i++) {
         Segment *seg = os->segments[i];
 
-        if (prog_date_time == 0) {
+        if (fabs(prog_date_time) < 1e-7) {
             if (os->nb_segments == 1)
                 prog_date_time = c->start_time_s;
             else