diff --git a/README.md b/README.md
index 824746f..5332f25 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,7 @@ Spaces in filename seem to make trouble at the moment - avoid them.
 
 `balance.sh` just gives your account balance.
 
-`faxreport.sh [options] [id]` loads the report of a given fax id (as shown by status.sh)
+`faxreport.sh [options] [id]` loads the report of a given fax id (as shown by status.sh). If no `id` ist given, it takes the last sent fax from this machine.
   : Options are not implemented yet, but those are gonna be accepted:
     * `-p` to only print and not save the report
     * `-d` to delete the given id from `.fax_history`
diff --git a/faxreport.sh b/faxreport.sh
index 6b9edc6..04940cb 100755
--- a/faxreport.sh
+++ b/faxreport.sh
@@ -27,7 +27,13 @@ done
 if [ $IDF = false ] 
 then 
 	echo "Guessing…"
-	exit 0 # Nur, damit es nix durcheinanderbringt, bis die guess-Arithmetik implementiert ist
+	$ID=$(tail -n 1 $BASEPATH/.fax_history)
+	if [ -z $ID ] 
+	then
+		echo "Nothing to guess from. Please send a fax first"
+		exit 1
+	fi
+	$IDF=true
 fi
 
 . $BASEPATH/authorization.sh # stellt AUTH_TOKEN bereit
@@ -36,7 +42,7 @@ JSON=$(curl -X GET -H  "accept: application/json" -H "Authorization: Bearer $AUT
 DATE=$(echo $JSON | jq '.created' | sed -e 's:"::g' )
 if [ -z $DATE ]
 then
-	echo "Fax seems to not exist. "
+	echo "Fax seems to not exist with this account."
 	exit 1
 fi
 DATE=$(date -d $DATE +%Y%m%d%H%M)