diff --git a/cvBlob/cvlabel.cpp b/cvBlob/cvlabel.cpp
index fc525d2..61ff01d 100644
--- a/cvBlob/cvlabel.cpp
+++ b/cvBlob/cvlabel.cpp
@@ -50,7 +50,7 @@ namespace cvb
     __CV_BEGIN__;
     {
       CV_ASSERT(img&&(img->depth==IPL_DEPTH_8U)&&(img->nChannels==1));
-      CV_ASSERT(imgOut&&(imgOut->depth==IPL_DEPTH_LABEL)&&(img->nChannels==1));
+      CV_ASSERT(imgOut&&(imgOut->depth==IPL_DEPTH_LABEL)&&(imgOut->nChannels==1));
 
       unsigned int numPixels=0;