diff --git a/apps/opencs/view/render/terraintexturemode.cpp b/apps/opencs/view/render/terraintexturemode.cpp
index 9b09614e6..6d682150a 100644
--- a/apps/opencs/view/render/terraintexturemode.cpp
+++ b/apps/opencs/view/render/terraintexturemode.cpp
@@ -41,7 +41,7 @@
 CSVRender::TerrainTextureMode::TerrainTextureMode (WorldspaceWidget *worldspaceWidget, osg::Group* parentNode, QWidget *parent)
 : EditMode (worldspaceWidget, QIcon {":scenetoolbar/editing-terrain-texture"}, Mask_Terrain | Mask_Reference, "Terrain texture editing", parent),
     mBrushTexture("L0#0"),
-    mBrushSize(0),
+    mBrushSize(1),
     mBrushShape(0),
     mTextureBrushScenetool(nullptr),
     mDragMode(InteractionType_None),
diff --git a/apps/opencs/view/widget/scenetooltexturebrush.cpp b/apps/opencs/view/widget/scenetooltexturebrush.cpp
index b199a2706..408187279 100644
--- a/apps/opencs/view/widget/scenetooltexturebrush.cpp
+++ b/apps/opencs/view/widget/scenetooltexturebrush.cpp
@@ -58,7 +58,7 @@ CSVWidget::BrushSizeControls::BrushSizeControls(const QString &title, QWidget *p
 CSVWidget::TextureBrushWindow::TextureBrushWindow(CSMDoc::Document& document, QWidget *parent)
     : QFrame(parent, Qt::Popup),
     mBrushShape(0),
-    mBrushSize(0),
+    mBrushSize(1),
     mBrushTexture("L0#0"),
     mDocument(document)
 {