diff --git a/src/mhd/DirectInduction/mhd.h b/src/mhd/DirectInduction/mhd.h
index ef83e645851d100fe2c43ea108d5236a8bf43c7b..170e670928ea60a9b37fd4e881c5b7bb144cdcf6 100644
--- a/src/mhd/DirectInduction/mhd.h
+++ b/src/mhd/DirectInduction/mhd.h
@@ -371,9 +371,9 @@ __attribute__((always_inline)) INLINE static void mhd_end_gradient(
 
   Cos_Ind_Diff = (Adv_B_source[0]*Delta_B[0]+Adv_B_source[1]*Delta_B[1]+Adv_B_source[2]*Delta_B[2]);
   
-  p->mhd_data.eta_OWAR += 1.0f/OW * ( 0.5f * p->h * p->h / (absB+FLT_MIN)) * 0.5f * fmaxf(0.0f,1.0f-Cos_Ind_Diff) * Abs_Adv_B_source * p->rho * (p->mass * kernel_root);
+  p->mhd_data.eta_OWAR += 1.0f/OW * ( 0.5f * p->h * p->h / (absB+FLT_MIN)) * 0.5f * fmaxf(0.0f,1.0f-Cos_Ind_Diff) * Abs_Adv_B_source * p->rho; /** * (p->mass * kernel_root);
 
-  p->mhd_data.eta_OWAR *= pow_dimension(1.0f/p->h) / p->rho;
+  p->mhd_data.eta_OWAR *= pow_dimension(1.0f/p->h) / p->rho; **/
 
   if (p->mhd_data.eta_OWAR<0.0f){
     error(
diff --git a/src/mhd/DirectInduction/mhd_iact.h b/src/mhd/DirectInduction/mhd_iact.h
index 5f9f65cebe20d0e1234f883555099b417e04bb79..2ab6195e2b10307e1aa7ba4a53f4122e167f52d9 100644
--- a/src/mhd/DirectInduction/mhd_iact.h
+++ b/src/mhd/DirectInduction/mhd_iact.h
@@ -158,7 +158,7 @@ __attribute__((always_inline)) INLINE static void runner_iact_mhd_gradient(
   }
 
   /* Calculate OWAR */
-
+/**
   float OW;
   OW = 1.0f;
 
@@ -216,7 +216,7 @@ __attribute__((always_inline)) INLINE static void runner_iact_mhd_gradient(
         "Error: incorrect OWAR "
         );
 }
-
+**/
 
 
 }
@@ -307,7 +307,7 @@ runner_iact_nonsym_mhd_gradient(const float r2, const float dx[3],
   }
 
   /* Calculate OWAR */
-
+/**
   float OW;
   OW = 1.0f;
 
@@ -340,7 +340,7 @@ runner_iact_nonsym_mhd_gradient(const float r2, const float dx[3],
         "Error: incorrect OWAR "
         );
 }
-
+**/
 }
 
 /**