diff --git a/src/sunstone/share/OneMonitor/runOneMonitor.rb b/src/sunstone/share/OneMonitor/runOneMonitor.rb
index 8ca591235b..48818a852c 100755
--- a/src/sunstone/share/OneMonitor/runOneMonitor.rb
+++ b/src/sunstone/share/OneMonitor/runOneMonitor.rb
@@ -16,6 +16,8 @@
 # limitations under the License.                                             #
 #--------------------------------------------------------------------------- #
 
+$: << File.dirname(__FILE__)
+
 require 'HostMonitor.rb'
 require 'VMMonitor.rb'