diff --git a/README.md b/README.md
index 369e802..ce30efc 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,7 @@ pixelfloot was built during the 37c3. in its actual state, its just a mess. I ho
 - move image with your cursor (needs `xdotool`): `./pixelfloot_bash.sh floot images/lucky-cat.jpg cursor`
 - Use a color as "alpha" (remove background): `ALPHACOLOR=FF00FF ./pixelfloot_bash.sh floot images/cursor.ppm cursor`
 - increase No of cuncurrent connections: `FLOOTFORKS=8 ./pixelfloot_bash.sh floot images/lucky-cat.jpg`
-
+- specify IP and PORT: `IPFLOOT=127.0.0.1 FLOOTPORT=1337 ./pixelfloot_bash.sh floot images/lucky-cat.jpg`
 
 ```shell
 $ ./pixelfloot_bash.sh help
diff --git a/pixelfloot_bash.sh b/pixelfloot_bash.sh
index 56bc039..b15aacf 100755
--- a/pixelfloot_bash.sh
+++ b/pixelfloot_bash.sh
@@ -1,8 +1,8 @@
 #!/bin/bash
 
 #IPFLOOT="151.217.15.90"
-IPFLOOT="192.168.254.7"
-FLOOTPORT="1337"
+test -z "$IPFLOOT" && IPFLOOT="127.0.0.1"
+test -z "$FLOOTPORT" && FLOOTPORT="1337"
 
 ########################################################################
 FNAME="$(echo $2 | sed -e 's/\..*$//' -e 's/^images\///')"