diff --git a/src/Gui/SoDatumLabel.cpp b/src/Gui/SoDatumLabel.cpp
index 6953cf8d1a..dee7922338 100644
--- a/src/Gui/SoDatumLabel.cpp
+++ b/src/Gui/SoDatumLabel.cpp
@@ -317,21 +317,6 @@ private:
 
     std::vector<SbVec3f> computeRadiusDiameterBBox() const
     {
-        SbVec2s imgsize;
-        int nc {};
-        int srcw = 1;
-        int srch = 1;
-
-        const unsigned char * dataptr = label->image.getValue(imgsize, nc);
-        if (dataptr) {
-            srcw = imgsize[0];
-            srch = imgsize[1];
-        }
-
-        float aspectRatio =  (float) srcw / (float) srch;
-        float imgHeight = scale * (float) (srch);
-        float imgWidth  = aspectRatio * imgHeight;
-
         // get the points stored in the pnt field
         const SbVec3f *points = label->pnts.getValues(0);
         if (label->pnts.getNum() < 2) {
@@ -342,7 +327,6 @@ private:
         SoDatumLabel::DiameterGeometry geom = label->calculateDiameterGeometry(points);
 
         std::vector<SbVec3f> corners;
-        float margin = imgHeight / 4.0F;
 
         // include main points and line segment points around text
         corners.push_back(geom.p1);