diff --git a/installer/build.sh b/installer/build.sh
index 9652471..b982f10 100755
--- a/installer/build.sh
+++ b/installer/build.sh
@@ -19,7 +19,7 @@ chmod 755 installer/root/usr/libexec/cups/filter/kyofilter
 echo "Validating PPD..."
 UNEXPECTED=$(cupstestppd installer/root/Library/Printers/PPDs/Contents/Resources/TA3505ci_AS.ppd 2>&1 \
     | grep "\*\*FAIL\*\*" \
-    | grep -v "FeedingEdgeConstraint\|kyofilter\|Übersetzungsstring\|Übersetzung")
+    | grep -v "FeedingEdgeConstraint\|kyofilter\|Übersetzungsstring\|Übersetzung") || true
 if [ -n "$UNEXPECTED" ]; then
     echo "ERROR: PPD has unexpected structural errors:" >&2
     echo "$UNEXPECTED" >&2