diff --git a/src/mainwindow.cpp b/src/mainwindow.cpp
index b0dfa93..33121e0 100644
--- a/src/mainwindow.cpp
+++ b/src/mainwindow.cpp
@@ -94,7 +94,7 @@ void MainWindow::updateSimu()
             ui->drawWidget->updateDudesBehavior();
             ui->drawWidget->setFlatSphere(ui->flatSphereSlider->value());
             ui->drawWidget->setSurfaceRatio(ui->surfaceRatioSlider->value());
-            if(m_debugEnabled)
+            if(ui->debugGroupBox->isVisible())
                 updateDebugMessage();
             ui->drawWidget->repaint();
         }
diff --git a/src/mainwindow.h b/src/mainwindow.h
index c61957f..2ed940f 100644
--- a/src/mainwindow.h
+++ b/src/mainwindow.h
@@ -26,7 +26,6 @@ private:
     int m_simSpeed;
     bool m_simSpeedChanged;
     bool m_paused;
-    bool m_debugEnabled;
     Coord m_debugCursorPos;
 
     void updateDebugMessage();
diff --git a/src/qtutils.cpp b/src/qtutils.cpp
index 797dab9..c91178a 100644
--- a/src/qtutils.cpp
+++ b/src/qtutils.cpp
@@ -23,7 +23,7 @@ EditorImage* QtUtils::loadImage(const QString &filename)
     img->width = glImage.width();
     img->height = glImage.height();
     img->allocate(glImage.byteCount());
-    memcpy(img->pixels, glImage.bits(), glImage.byteCount());
+    memcpy(img->pixels.data(), glImage.bits(), glImage.byteCount());
     return img;
 }
 
@@ -44,7 +44,7 @@ EditorImage::EditorImage(int myWidth, int myHeight, float frequency, float ampli
     depth = 32;
     Image::allocate(width*height*depth);
 
-    GLubyte *data = (GLubyte*)Image::pixels;
+    GLubyte *data = (GLubyte*)Image::pixels.data();
 
     float xFactor = 1.0f / (width - 1);
     float yFactor = 1.0f / (height - 1);