diff --git a/Dump.sh b/Dump.sh
index ee36eff..7cf40ed 100755
--- a/Dump.sh
+++ b/Dump.sh
@@ -33,7 +33,7 @@ trap 'quit 0' SIGINT SIGTERM EXIT
 do_record() {
 	for i in $CAMERAS; do
 		echo "starting recording for camera $i" >&2
-		OUTFILE_START=tmp_dump_cam_${i}_$(date +%s)_RANDOM$RANDOM.mjpg
+		OUTFILE_START=tmp_dump_cam_${i}_$(date +%s.%N)_RANDOM$RANDOM.mjpg
 		( 
 			EXACT_START_TIME=$(date +%s.%N)
 			outfile_close_trap() {