diff --git a/apps/haartraining/createsamples.cpp b/apps/haartraining/createsamples.cpp
index a1a11e0b5..4d01fbd10 100644
--- a/apps/haartraining/createsamples.cpp
+++ b/apps/haartraining/createsamples.cpp
@@ -73,7 +73,7 @@ int main( int argc, char* argv[] )
     double maxxangle = 1.1;
     double maxyangle = 1.1;
     double maxzangle = 0.5;
-    int showsamples = 0;
+    bool showsamples = false;
     /* the samples are adjusted to this scale in the sample preview window */
     double scale = 4.0;
     int width  = 24;
@@ -159,7 +159,7 @@ int main( int argc, char* argv[] )
         }
         else if( !strcmp( argv[i], "-show" ) )
         {
-            showsamples = 1;
+            showsamples = true;
             if( i+1 < argc && strlen( argv[i+1] ) > 0 && argv[i+1][0] != '-' )
             {
                 double d;
diff --git a/apps/haartraining/cvhaartraining.cpp b/apps/haartraining/cvhaartraining.cpp
index 31abfff6d..ed2684813 100644
--- a/apps/haartraining/cvhaartraining.cpp
+++ b/apps/haartraining/cvhaartraining.cpp
@@ -2848,7 +2848,7 @@ void cvCreateTrainingSamples( const char* filename,
                               const char* bgfilename, int count,
                               int invert, int maxintensitydev,
                               double maxxangle, double maxyangle, double maxzangle,
-                              int showsamples,
+                              bool showsamples,
                               int winwidth, int winheight )
 {
     CvSampleDistortionData data;
@@ -2915,7 +2915,7 @@ void cvCreateTrainingSamples( const char* filename,
                     cvShowImage( "Sample", &sample );
                     if( cvWaitKey( 0 ) == 27 )
                     {
-                        showsamples = 0;
+                        showsamples = false;
                     }
                 }
 
diff --git a/apps/haartraining/cvhaartraining.h b/apps/haartraining/cvhaartraining.h
index 84a5643e7..038e1cc35 100644
--- a/apps/haartraining/cvhaartraining.h
+++ b/apps/haartraining/cvhaartraining.h
@@ -79,14 +79,14 @@ struct CvMat;
  */
 #define CV_RANDOM_INVERT 0x7FFFFFFF
 
-void cvCreateTrainingSamples( const char* filename,
+void cvCreateTrainingSamples(const char* filename,
                               const char* imgfilename, int bgcolor, int bgthreshold,
                               const char* bgfilename, int count,
                               int invert = 0, int maxintensitydev = 40,
                               double maxxangle = 1.1,
                               double maxyangle = 1.1,
                               double maxzangle = 0.5,
-                              int showsamples = 0,
+                              bool showsamples = false,
                               int winwidth = 24, int winheight = 24 );
 
 void cvCreatePngTrainingSet(const char* imgfilename, int bgcolor, int bgthreshold,