diff --git a/plugins/solaris/io_disk b/plugins/solaris/io_disk
index 3e222d48..f50d58b0 100755
--- a/plugins/solaris/io_disk
+++ b/plugins/solaris/io_disk
@@ -88,8 +88,7 @@
 is_multigraph "$@"
 
 # Shell options
-set -o nounset
-set -o pipefail
+set -o nounset  # Like perl use strict;
 
 # Set environment variables
 plugin_name=io