diff --git a/sabnzbd/audiobook.bash b/sabnzbd/audiobook.bash
index ad4a4c1..47ddea8 100644
--- a/sabnzbd/audiobook.bash
+++ b/sabnzbd/audiobook.bash
@@ -1,5 +1,5 @@
 #!/usr/bin/with-contenv bash
-ScriptVersion="0.1"
+ScriptVersion="0.2"
 scriptName="Audiobook"
 
 #### Import Settings
@@ -18,12 +18,14 @@ touch "/config/scripts/audiobook.txt"
 exec &> >(tee -a "/config/scripts/audiobook.txt")
 
 clean () {
-		if [ $(find "$1" -type f -regex ".*/.*\.\(m4b\)" | wc -l) -gt 0 ]; then
-			find "$1" -type f -not -regex ".*/.*\.\(m4b\)" -delete
+		log "Searching for audiobook (m4b) files..."
+		if [ $(find "$1" -type f -iname "*.m4b" | wc -l) -gt 0 ]; then
+			log "M4B files found, removing non m4b files..."
+			find "$1" -type f -not -iname "*.m4b" -delete
 			find "$1" -mindepth 2 -type f -exec mv "{}" "$1"/ \;
 			find "$1" -mindepth 1 -type d -delete
 		else
-			echo "ERROR: NO AUDIOBOOK FILES FOUND (M4B)" && exit 1
+			echo "ERROR: NO audiobook files found (M4B)" && exit 1
 		fi
 }