diff --git a/arm32v7.dockerfile b/arm32v7.dockerfile
index 96746d9..bb86701 100644
--- a/arm32v7.dockerfile
+++ b/arm32v7.dockerfile
@@ -39,6 +39,7 @@ ENV enableAudioScript=true
 ENV enableVideoScript=true
 ENV matchDistance=5
 ENV videoFormat="bestvideo*+bestaudio/best"
+ENV scriptInterval=15m
 
 RUN \
 	echo "*** install packages ***" && \