diff --git a/OCRmyPDF.sh b/OCRmyPDF.sh
index b89734c9..4985fff7 100755
--- a/OCRmyPDF.sh
+++ b/OCRmyPDF.sh
@@ -243,7 +243,7 @@ done
 # FreeBSD requires '-t prefix' to be used so that $TMPDIR is taken into account
 # But in Linux '-t template' is handled differently than in FreeBSD
 # Therefore different calls must be used for Linux and for FreeBSD
-prefix="$(date +"%Y%m%d_%H%M").filename.$(basename "$FILE_INPUT_PDF" | sed 's/[.][^.]*$//')"	# prefix made of date, time and pdf file name without extension
+prefix="com.github.ocrmypdf.$(date +"%Y%m%d_%H%M").$(basename "$FILE_INPUT_PDF" | sed 's/[.][^.]*$//')"	# prefix made of date, time and pdf file name without extension
 TMP_FLD=`mktemp -d 2>/dev/null || mktemp -d -t "${prefix}" 2>/dev/null`				# try Linux syntax first, if it fails try FreeBSD/OSX			
 if [ $? -ne 0 ]; then
 	if [ -z "$TMPDIR" ]; then