diff --git a/geometry/geometry_config.py b/geometry/geometry_config.py
index 130199c1f..c7feae42d 100644
--- a/geometry/geometry_config.py
+++ b/geometry/geometry_config.py
@@ -164,7 +164,7 @@
      c.strawtubes.YLayerOffset = 1. * u.cm
      c.strawtubes.YPlaneOffset = 0 * u.cm   
      c.strawtubes.FrameMaterial = "steel"
-     c.strawtubes.FrameLateralWidth = 0.25 * u.m
+     c.strawtubes.FrameLateralWidth = 0.17 * u.m
      c.strawtubes.DeltazFrame = 2.5 * u.cm
 
     c.strawtubes.WallThickness = 0.0036 * u.cm