diff --git a/check_galera_cluster b/check_galera_cluster
index ce55a14..b6f2c21 100755
--- a/check_galera_cluster
+++ b/check_galera_cluster
@@ -2,7 +2,7 @@
 PROGNAME=`basename $0`
 VERSION="Version 1.0,"
 AUTHOR="Guillaume Coré <g@fridim.org>"
- 
+
 ST_OK=0
 ST_WR=1
 ST_CR=2
@@ -10,34 +10,34 @@ ST_UK=3
 ST_FINAL=$ST_UK
 
 print_version() {
-    echo "$VERSION $AUTHOR"
+  echo "$VERSION $AUTHOR"
 } 
 
 print_help() {
-    print_version $PROGNAME $VERSION
-    echo ""
-    echo "$PROGNAME is a Nagios plugin to monitor Galera cluster status."
-    echo ""
-    echo "$PROGNAME -u USER -p PASSWORD [-H HOST] [-P PORT] [-w SIZE] [-c SIZE] [-f FLOAT] [-0]"
-    echo ""
-    echo "Options:"
-    echo "  u)"
-    echo "    MySQL user."
-    echo "  p)"
-    echo "    MySQL password."
-    echo "  H)"
-    echo "    MySQL host. Default is localhost."
-    echo "  P)"
-    echo "    MySQL port. Default is 3306."
-    echo "  w)"
-    echo "    Sets minimum number of nodes in the cluster when WARNING is raised. (default is same as critical)."
-    echo "  c)"
-    echo "    Sets minimum number of nodes in the cluster when CRITICAL is raised. (default is 2)."
-    echo "  f)"
-    echo "    Sets critical value of wsrep_flow_control_paused (default is 0.1)."
-    echo "  0)"
-    echo "    Rise CRITICAL if the node is not primary"
-    exit $ST_UK
+  print_version $PROGNAME $VERSION
+  echo ""
+  echo "$PROGNAME is a Nagios plugin to monitor Galera cluster status."
+  echo ""
+  echo "$PROGNAME -u USER -p PASSWORD [-H HOST] [-P PORT] [-w SIZE] [-c SIZE] [-f FLOAT] [-0]"
+  echo ""
+  echo "Options:"
+  echo "  u)"
+  echo "    MySQL user."
+  echo "  p)"
+  echo "    MySQL password."
+  echo "  H)"
+  echo "    MySQL host. Default is localhost."
+  echo "  P)"
+  echo "    MySQL port. Default is 3306."
+  echo "  w)"
+  echo "    Sets minimum number of nodes in the cluster when WARNING is raised. (default is same as critical)."
+  echo "  c)"
+  echo "    Sets minimum number of nodes in the cluster when CRITICAL is raised. (default is 2)."
+  echo "  f)"
+  echo "    Sets critical value of wsrep_flow_control_paused (default is 0.1)."
+  echo "  0)"
+  echo "    Rise CRITICAL if the node is not primary"
+  exit $ST_UK
 }
 
 # default values
@@ -47,49 +47,49 @@ mysqlhost='localhost'
 fcp=0.1
 
 while getopts “hvu:p:H:P:w:c:f:0” OPTION; do
-    case $OPTION in
-        h)
-            print_help
-            exit $ST_UK
-            ;;
-        v)
-            print_version $PROGNAME $VERSION
-            exit $ST_UK
-            ;;
-        u)
-            mysqluser=$OPTARG
-            ;;
-        p)
-            password=$OPTARG
-            ;;
-        H)
-            mysqlhost=$OPTARG
-            ;;
-        P)
-            port=$OPTARG
-            ;;
-        w)
-            warn=$OPTARG
-            ;;
-        c)
-            crit=$OPTARG
-            ;;
-        f)
-            fcp=$OPTARG
-            ;;
-        0)
-            primary='TRUE'
-            ;;
-        ?)
-            echo "Unknown argument: $1"
-            print_help
-            exit $ST_UK
-            ;;
-    esac
+  case $OPTION in
+    h)
+      print_help
+      exit $ST_UK
+      ;;
+    v)
+      print_version $PROGNAME $VERSION
+      exit $ST_UK
+      ;;
+    u)
+      mysqluser=$OPTARG
+      ;;
+    p)
+      password=$OPTARG
+      ;;
+    H)
+      mysqlhost=$OPTARG
+      ;;
+    P)
+      port=$OPTARG
+      ;;
+    w)
+      warn=$OPTARG
+      ;;
+    c)
+      crit=$OPTARG
+      ;;
+    f)
+      fcp=$OPTARG
+      ;;
+    0)
+      primary='TRUE'
+      ;;
+    ?)
+      echo "Unknown argument: $1"
+      print_help
+      exit $ST_UK
+      ;;
+  esac
 done
 
 if [ -z "$warn" ]; then
-    warn=$crit
+  warn=$crit
 fi
 
 # MANDATORY args