diff --git a/frigate/const.py b/frigate/const.py
index 6f8fc8ad0..69697a4b1 100644
--- a/frigate/const.py
+++ b/frigate/const.py
@@ -50,7 +50,7 @@ DRIVER_INTEL_iHD = "iHD"
 
 # Record Values
 
-CACHE_SEGMENT_FORMAT = "%Y%m%d%H%M%S_%z"
+CACHE_SEGMENT_FORMAT = "%Y%m%d%H%M%S%z"
 MAX_SEGMENT_DURATION = 600
 MAX_PLAYLIST_SECONDS = 7200  # support 2 hour segments for a single playlist to account for cameras with inconsistent segment times