diff --git a/check_memory/check_memory b/check_memory/check_memory
index bf46711..4f272d1 100644
--- a/check_memory/check_memory
+++ b/check_memory/check_memory
@@ -23,14 +23,36 @@
 use strict;
 use warnings;
 use vars qw($PROGNAME $VERSION $FREECMD $UNIT);
-use Nagios::Plugin;
+
+sub load_module {
+    my @names = @_;
+    my $module;
+    for my $name (@names) {
+        my $file = $name;
+        # requires need either a bare word or a file name
+        $file =~ s{::}{/}gsxm;
+        $file .= '.pm';
+        eval {
+            require $file;
+            $name->import();
+            $module = $name;
+		};
+		last if $module;
+    }
+    return $module;
+}
+
+my $plugin_module;
+BEGIN {
+	$plugin_module = load_module( 'Monitoring::Plugin', 'Nagios::Plugin' );
+}
 
 $PROGNAME = "check_memory";
 $VERSION = '1.0.1';
 $FREECMD = '/usr/bin/free';
 $UNIT = 'M';
 
-my $np = Nagios::Plugin->new(
+my $np = $plugin_module->new(
   usage => "Usage: %s [ -w <warning_threshold> ] [ -c <critical_threshold> ]\n"
     . '   [ -u <unit> ]',
   version => $VERSION,
