diff --git a/modules/objdetect/src/hog.cpp b/modules/objdetect/src/hog.cpp
index ac02e67a36..80f8ef2db0 100644
--- a/modules/objdetect/src/hog.cpp
+++ b/modules/objdetect/src/hog.cpp
@@ -100,7 +100,7 @@ size_t HOGDescriptor::getDescriptorSize() const
 
 double HOGDescriptor::getWinSigma() const
 {
-    return winSigma >= 0 ? winSigma : (blockSize.width + blockSize.height)/8.;
+    return winSigma > 0 ? winSigma : (blockSize.width + blockSize.height)/8.;
 }
 
 bool HOGDescriptor::checkDetectorSize() const