diff --git a/cvaux/src/cvtexture.cpp b/cvaux/src/cvtexture.cpp
index 0229161..7ef86e0 100644
--- a/cvaux/src/cvtexture.cpp
+++ b/cvaux/src/cvtexture.cpp
@@ -469,7 +469,7 @@
             descriptors[ CV_GLCMDESC_ENERGY ] += entryValue*entryValue;
         }
 
-        if( marginalProbability>0 )
+        if( marginalProbability )
             marginalProbabilityEntropy += marginalProbability[ actualSideLoop1 ]*log(marginalProbability[ actualSideLoop1 ]);
     }
 
diff --git a/cxcore/src/cxdrawing.cpp b/cxcore/src/cxdrawing.cpp
index ecbe22e..41d6625 100644
--- a/cxcore/src/cxdrawing.cpp
+++ b/cxcore/src/cxdrawing.cpp
@@ -1973,7 +1973,7 @@
     if( !pts )
         CV_ERROR( CV_StsNullPtr, "" );
 
-    if( npts <= 0 )
+    if( !npts )
         CV_ERROR( CV_StsNullPtr, "" );
 
     if( shift < 0 || XY_SHIFT < shift )
@@ -2044,7 +2044,7 @@
     if( !pts )
         CV_ERROR( CV_StsNullPtr, "" );
 
-    if( npts <= 0 )
+    if( !npts )
         CV_ERROR( CV_StsNullPtr, "" );
 
     if( shift < 0 || XY_SHIFT < shift )
diff --git a/cxcore/src/cxpersistence.cpp b/cxcore/src/cxpersistence.cpp
index 75efa94..7e64c3d 100644
--- a/cxcore/src/cxpersistence.cpp
+++ b/cxcore/src/cxpersistence.cpp
@@ -4675,7 +4675,7 @@
     if( header_dt )
         CV_CALL( header_size = icvCalcElemSize( header_dt, header_size ));
 
-    if( vtx_dt > 0 )
+    if( vtx_dt )
     {
         CV_CALL( src_vtx_size = icvCalcElemSize( vtx_dt, 0 ));
         CV_CALL( vtx_size = icvCalcElemSize( vtx_dt, vtx_size ));