diff --git a/samples/cpp/latentsvm_multidetect.cpp b/samples/cpp/latentsvm_multidetect.cpp
index 619c54b84..be8f2f8fe 100644
--- a/samples/cpp/latentsvm_multidetect.cpp
+++ b/samples/cpp/latentsvm_multidetect.cpp
@@ -96,6 +96,8 @@ static void readDirectory( const string& directoryName, vector<string>& filename
             else
                 filenames.push_back( string(dent->d_name) );
         }
+
+        closedir( dir );
     }
 #endif