diff --git a/.github/workflows/rockylinux9.yaml b/.github/workflows/rockylinux9.yaml
index 5c2fb01..499887d 100644
--- a/.github/workflows/rockylinux9.yaml
+++ b/.github/workflows/rockylinux9.yaml
@@ -12,20 +12,12 @@ jobs:
       image: rockylinux/rockylinux:9
     steps:
     - uses: actions/checkout@v1
-    - name: Enable EPEL
-      run: |
-        dnf install -y dnf-plugins-core
-        dnf config-manager --set-enabled crb
-        dnf install -y epel-release
     - name: Install dependencies
       run: |
-        dnf -y install nagios-plugins-perl perl-FindBin perl-lib
-    - name: Move Plugin to nagios-plugins dir
-      run: |
-        mv check_ro_mounts.pl /usr/lib64/nagios/plugins/
+        dnf -y install perl perl-lib
     - name: Launch plugin with --help
       run: |
-        /usr/lib64/nagios/plugins/check_ro_mounts.pl --help
+        ./check_ro_mounts.pl --help
   launch-checks:
     needs: launch-help
     runs-on: ubuntu-latest
@@ -33,32 +25,24 @@ jobs:
       image: rockylinux/rockylinux:9
     steps:
     - uses: actions/checkout@v1
-    - name: Enable EPEL
-      run: |
-        dnf install -y dnf-plugins-core
-        dnf config-manager --set-enabled crb
-        dnf install -y epel-release
     - name: Install dependencies
       run: |
-        dnf -y install nagios-plugins-perl perl-FindBin perl-lib
-    - name: Move Plugin to nagios-plugins dir
-      run: |
-        mv check_ro_mounts.pl /usr/lib64/nagios/plugins/
+        dnf -y install perl perl-lib
     - name: Execute in debug mode (should detect read-only mounts)
       run: |
-        /usr/lib64/nagios/plugins/check_ro_mounts.pl -d
+        ./check_ro_mounts.pl -d
       continue-on-error: true
     - name: Execute with include overlay file system (should not detect any read-only mounts)
       run: |
-        /usr/lib64/nagios/plugins/check_ro_mounts.pl -T overlay
+        ./check_ro_mounts.pl -T overlay
     - name: Execute with excluded file systems and mount paths (should not detect any read-only mounts)
       run: |
-        /usr/lib64/nagios/plugins/check_ro_mounts.pl -X tmpfs -X proc -X devpts -X sysfs -X cgroup -X cgroup2 -x "/__e"
+        ./check_ro_mounts.pl -X tmpfs -X proc -X devpts -X sysfs -X cgroup -X cgroup2 -x "/__e"
     - name: Execute with file systems in missing fstab file (should alert for missing /etc/fstab)
       run: |
-        /usr/lib64/nagios/plugins/check_ro_mounts.pl -F
+        ./check_ro_mounts.pl -F
       continue-on-error: true
     - name: Execute with file systems in fstab file (should not detect any read-only mounts)
       run: |
         for mount in $(egrep "(ext3|ext4|xfs) rw" /proc/mounts); do echo "$mount" >> /etc/fstab; done
-        /usr/lib64/nagios/plugins/check_ro_mounts.pl -F
+        ./check_ro_mounts.pl -F
diff --git a/.github/workflows/ubuntu-latest.yaml b/.github/workflows/ubuntu-latest.yaml
index 58ee5fb..230abc0 100644
--- a/.github/workflows/ubuntu-latest.yaml
+++ b/.github/workflows/ubuntu-latest.yaml
@@ -12,13 +12,10 @@ jobs:
     - uses: actions/checkout@v1
     - name: Install dependencies
       run: |
-        sudo apt-get install -yy libmonitoring-plugin-perl monitoring-plugins-common
-    - name: Move Plugin to nagios-plugins dir
-      run: |
-        sudo mv check_ro_mounts.pl /usr/lib/nagios/plugins/
+        sudo apt-get install -yy perl
     - name: Launch plugin with --help
       run: |
-        /usr/lib/nagios/plugins/check_ro_mounts.pl --help
+        ./check_ro_mounts.pl --help
   launch-checks:
     needs: launch-help
     runs-on: ubuntu-latest
@@ -26,25 +23,22 @@ jobs:
     - uses: actions/checkout@v1
     - name: Install dependencies
       run: |
-        sudo apt-get install -yy libmonitoring-plugin-perl monitoring-plugins-common
-    - name: Move Plugin to nagios-plugins dir
-      run: |
-        sudo mv check_ro_mounts.pl /usr/lib/nagios/plugins/
+        sudo apt-get install -yy perl
     - name: Execute in debug mode (should detect read-only mounts)
       run: |
-        /usr/lib/nagios/plugins/check_ro_mounts.pl -d
+        ./check_ro_mounts.pl -d
       continue-on-error: true
     - name: Execute with specific file system ext4 (should not detect any read-only mounts)
       run: |
-        /usr/lib/nagios/plugins/check_ro_mounts.pl -T ext4
+        ./check_ro_mounts.pl -T ext4
     - name: Execute with excluded file systems and mount paths (should not detect any read-only mounts)
       run: |
-        /usr/lib/nagios/plugins/check_ro_mounts.pl -X securityfs -X pstore -X autofs -X bpf -X mqueue -X debugfs -X tracefs -X fusectl -X configfs -X ramfs -X squashfs -X tmpfs -X proc -X devpts -X sysfs -X cgroup -X cgroup2
+        ./check_ro_mounts.pl -X securityfs -X pstore -X autofs -X bpf -X mqueue -X debugfs -X tracefs -X fusectl -X configfs -X ramfs -X squashfs -X tmpfs -X proc -X devpts -X sysfs -X cgroup -X cgroup2
     - name: Execute with file systems in missing fstab file (should alert for missing /etc/fstab)
       run: |
-        /usr/lib/nagios/plugins/check_ro_mounts.pl -F -f ./fstab
+        ./check_ro_mounts.pl -F -f ./fstab
       continue-on-error: true
     - name: Execute with file systems in fstab file (should not detect any read-only mounts)
       run: |
         for mount in $(egrep "(ext3|ext4|xfs) rw" /proc/mounts); do sudo echo "$mount" >> ./fstab; done
-        /usr/lib/nagios/plugins/check_ro_mounts.pl -F -f ./fstab
+        ./check_ro_mounts.pl -F -f ./fstab
diff --git a/check_ro_mounts.pl b/check_ro_mounts.pl
index 75c743a..e6da0f7 100755
--- a/check_ro_mounts.pl
+++ b/check_ro_mounts.pl
@@ -25,10 +25,6 @@
 
 use strict;
 use Getopt::Long;
-use FindBin;
-use lib "$FindBin::Bin";
-use lib '@libexecdir@';
-use utils qw (%ERRORS &support);
 
 my $name = 'RO_MOUNTS';
 my $mtab = '/proc/mounts';
@@ -42,6 +38,7 @@
 my @ro_mounts = ();
 my $want_help = 0;
 my $debug = 0;
+my %ERRORS=('OK'=>0,'WARNING'=>1,'CRITICAL'=>2,'UNKNOWN'=>3,'DEPENDENT'=>4);
 
 Getopt::Long::Configure(qw(no_ignore_case));
 my $res = GetOptions(
@@ -186,8 +183,6 @@ sub print_help {
     Specify a different path for fstab (default is /etc/fstab)
 
 EOH
-
-    support();
 }
 
 # vim:sw=4:ts=4:et