diff --git a/modules/objdetect/src/latentsvmdetector.cpp b/modules/objdetect/src/latentsvmdetector.cpp
index d8e8f7a4a8..60900c598f 100644
--- a/modules/objdetect/src/latentsvmdetector.cpp
+++ b/modules/objdetect/src/latentsvmdetector.cpp
@@ -169,6 +169,7 @@ void LatentSvmDetector::clear()
     for( size_t i = 0; i < detectors.size(); i++ )
         cvReleaseLatentSvmDetector( &detectors[i] );
     detectors.clear();
+    classNames.clear();
 }
 
 bool LatentSvmDetector::empty() const