diff --git a/samples/cpp/bagofwords_classification.cpp b/samples/cpp/bagofwords_classification.cpp
index f9401259fb..5b36efff93 100644
--- a/samples/cpp/bagofwords_classification.cpp
+++ b/samples/cpp/bagofwords_classification.cpp
@@ -1347,7 +1347,7 @@ void VocData::initVoc2007to2010( const string& vocPath, const bool useTestDatase
     m_vocName = getVocName( vocPath );
 
     CV_Assert( !m_vocName.compare("VOC2007") || !m_vocName.compare("VOC2008") ||
-               !m_vocName.compare("VOC2009") || !m_vocName.compare("VOC2010") )
+               !m_vocName.compare("VOC2009") || !m_vocName.compare("VOC2010") );
 
     m_vocPath = checkFilenamePathsep( vocPath, true );