diff --git a/benchmarks/rotatingDrum_4MParticles/caseSetup/sphereShape b/benchmarks/rotatingDrum_4MParticles/caseSetup/sphereShape
deleted file mode 100755
index eab9b617..00000000
--- a/benchmarks/rotatingDrum_4MParticles/caseSetup/sphereShape
+++ /dev/null
@@ -1,11 +0,0 @@
-/* -------------------------------*- C++ -*--------------------------------- *\ 
-|  phasicFlow File                                                            | 
-|  copyright: www.cemf.ir                                                     | 
-\* ------------------------------------------------------------------------- */ 
-
-objectName 	sphereDict;
-objectType 	sphereShape;
-
-names 		(glassBead); 	// names of shapes 
-diameters 	(0.003);		// diameter of shapes 
-materials	(glassMat);		// material names for shapes 
diff --git a/benchmarks/rotatingDrum_4MParticles/settings/geometryDict b/benchmarks/rotatingDrum_4MParticles/settings/geometryDict
index cb4f2ea7..97c513c8 100644
--- a/benchmarks/rotatingDrum_4MParticles/settings/geometryDict
+++ b/benchmarks/rotatingDrum_4MParticles/settings/geometryDict
@@ -23,10 +23,6 @@ rotatingAxisInfo                  // information for rotatingAxisMotion motion m
 
 surfaces
 {
-    /*
-        A cylinder with begin and end radii 0.12 m and axis points at (0 0 0) and (0 0 0.36)
-    */
-    
     cylinder
     {
         type        cylinderWall;          // type of the wall
diff --git a/benchmarks/rotatingDrum_4MParticles/settings/particlesDict b/benchmarks/rotatingDrum_4MParticles/settings/particlesDict
index e27e3f69..d24e6441 100644
--- a/benchmarks/rotatingDrum_4MParticles/settings/particlesDict
+++ b/benchmarks/rotatingDrum_4MParticles/settings/particlesDict
@@ -9,11 +9,6 @@ fileFormat     ASCII;
 
 setFields
 {
-    /*
-        Default value for fields defined for particles
-        These fields should always be defined for simulations with 
-        spherical particles
-    */
     defaultValue 
     {
         velocity         realx3     (0 0 0);     // linear velocity (m/s)