diff --git a/tools/vm/slabinfo-gnuplot.sh b/tools/vm/slabinfo-gnuplot.sh
index 35b039864b778c1f03df563dce35ca59da1d79b4..0cf28aa6f21c3b392b8a90b4aa9e9087f6807b3e 100644
--- a/tools/vm/slabinfo-gnuplot.sh
+++ b/tools/vm/slabinfo-gnuplot.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 
 # Sergey Senozhatsky, 2015
 # sergey.senozhatsky.work@gmail.com