diff --git a/README.pod b/README.pod
index 289d778..7141d0f 100644
--- a/README.pod
+++ b/README.pod
@@ -20,7 +20,7 @@ Simple real-time plotting example: plot how much data is received on the wlan0
 network interface in bytes/second (uses bash, awk and Linux):
 
  $ while true; do sleep 1; cat /proc/net/dev; done |
-   awk '/wlan0/ {if(b) {print $2-b; fflush()} b=$2}' |
+   awk -Winteractive '/wlan0/ {if(b) {print $2-b} b=$2}' |
    feedgnuplot --lines --stream --xlen 10 --ylabel 'Bytes/sec' --xlabel seconds
 
 =head1 DESCRIPTION
diff --git a/bin/feedgnuplot b/bin/feedgnuplot
index 66e1a5c..7c6d138 100755
--- a/bin/feedgnuplot
+++ b/bin/feedgnuplot
@@ -644,7 +644,7 @@ Simple real-time plotting example: plot how much data is received on the wlan0
 network interface in bytes/second (uses bash, awk and Linux):
 
  $ while true; do sleep 1; cat /proc/net/dev; done |
-   awk '/wlan0/ {if(b) {print $2-b; fflush()} b=$2}' |
+   awk -Winteractive '/wlan0/ {if(b) {print $2-b} b=$2}' |
    feedgnuplot --lines --stream --xlen 10 --ylabel 'Bytes/sec' --xlabel seconds
 
 =head1 DESCRIPTION