diff --git a/ManiVault/src/util/PixelSelectionTool.cpp b/ManiVault/src/util/PixelSelectionTool.cpp
index b2916c4cf..be88344b0 100644
--- a/ManiVault/src/util/PixelSelectionTool.cpp
+++ b/ManiVault/src/util/PixelSelectionTool.cpp
@@ -22,6 +22,7 @@ PixelSelectionTool::PixelSelectionTool(QWidget* targetWidget, const bool& enable
     _active(false),
     _notifyDuringSelection(true),
     _brushRadius(BRUSH_RADIUS_DEFAULT),
+    _fixedBrushRadiusModifier(Qt::NoModifier),
     _mousePosition(),
     _mousePositions(),
     _mouseButtons(),
@@ -126,6 +127,16 @@ void PixelSelectionTool::setBrushRadius(const float& brushRadius)
     paint();
 }
 
+Qt::KeyboardModifier PixelSelectionTool::getFixedBrushRadiusModifier() const
+{
+    return _fixedBrushRadiusModifier;
+}
+
+void PixelSelectionTool::setFixedBrushRadiusModifier(Qt::KeyboardModifier fixedBrushRadiusModifier)
+{
+    _fixedBrushRadiusModifier = fixedBrushRadiusModifier;
+}
+
 QColor PixelSelectionTool::getMainColor() const
 {
     return _mainColor;
@@ -495,6 +506,9 @@ bool PixelSelectionTool::eventFilter(QObject* target, QEvent* event)
                 case PixelSelectionType::Brush:
                 case PixelSelectionType::Sample:
                 {
+                    if (_fixedBrushRadiusModifier != Qt::NoModifier && QGuiApplication::keyboardModifiers() == _fixedBrushRadiusModifier)
+                        break;
+
                     if (wheelEvent->angleDelta().y() < 0)
                         setBrushRadius(_brushRadius - BRUSH_RADIUS_DELTA);
                     else
diff --git a/ManiVault/src/util/PixelSelectionTool.h b/ManiVault/src/util/PixelSelectionTool.h
index d18160891..b63403239 100644
--- a/ManiVault/src/util/PixelSelectionTool.h
+++ b/ManiVault/src/util/PixelSelectionTool.h
@@ -86,6 +86,12 @@ class CORE_EXPORT PixelSelectionTool : public QObject
      */
     void setBrushRadius(const float& brushRadius);
 
+    /** Get fixed brush radius modifier */
+    Qt::KeyboardModifier getFixedBrushRadiusModifier() const;
+
+    /** Set fixed brush radius modifier */
+    void setFixedBrushRadiusModifier(Qt::KeyboardModifier fixedBrushRadiusModifier);
+
     /** Get main drawing color */
     QColor getMainColor() const;
 
@@ -99,7 +105,7 @@ class CORE_EXPORT PixelSelectionTool : public QObject
     void setChanged();
 
     /**
-     * Get whether the selection process is cBurrently active
+     * Get whether the selection process is currently active
      * @return Boolean indicating whether the selection process is currently active
      */
     bool isActive() const {
@@ -186,6 +192,7 @@ class CORE_EXPORT PixelSelectionTool : public QObject
     bool                        _active;                    /** Whether the selection process is active */
     bool                        _notifyDuringSelection;     /** Whether the selection is published continuously or at the end */
     float                       _brushRadius;               /** Brush radius */
+    Qt::KeyboardModifier        _fixedBrushRadiusModifier;  /** Do not change brush radius when fixed by pressing a key (e.g. for navigation) */
     QPoint                      _mousePosition;             /** Current mouse position */
     QVector<QPoint>             _mousePositions;            /** Recorded mouse positions */
     int                         _mouseButtons;              /** State of the left, middle and right mouse buttons */