diff --git a/vcf_compressor.sh b/vcf_compressor.sh
index 6c5c311..1634ba4 100755
--- a/vcf_compressor.sh
+++ b/vcf_compressor.sh
@@ -45,7 +45,7 @@ compress_photo () {
 process_line () {
     line="$1"
 
-    echo "$line" | egrep "^PHOTO;" >/dev/null 2>&1
+    echo "$line" | egrep "^PHOTO;" | grep ";ENCODING=b;" >/dev/null 2>&1
     if [ $? -eq 0 ]; then
         compress_photo "$line"
     else