diff --git a/TestBenchFramework/BenchControl/MettlerToledo/Standard/GetBalanceSNOp.cs b/TestBenchFramework/BenchControl/MettlerToledo/Standard/GetBalanceSNOp.cs
index 7ed1e35e4..2c263e3df 100644
--- a/TestBenchFramework/BenchControl/MettlerToledo/Standard/GetBalanceSNOp.cs
+++ b/TestBenchFramework/BenchControl/MettlerToledo/Standard/GetBalanceSNOp.cs
@@ -34,7 +34,7 @@ namespace TBF.BenchControl.MettlerToledo.Standard
 		/// <summary>Start this operation</summary>
 		public void Start()
         {
-			log.Debug("{0} - Start()", balanceDev.Name);
+			log.DebugFormat("{0} - Start()", balanceDev.Name);
 			balanceDev.GetSerialNumber();
 		}
 
@@ -57,7 +57,7 @@ namespace TBF.BenchControl.MettlerToledo.Standard
 		/// <summary>Stop this operation</summary>
 		public void Stop()
 		{
-			log.Debug("{0} - Stop()", balanceDev.Name);
+			log.DebugFormat("{0} - Stop()", balanceDev.Name);
 		}
 	}
 }
diff --git a/TestBenchFramework/BenchControl/MettlerToledo/Standard/SetUnitsOp.cs b/TestBenchFramework/BenchControl/MettlerToledo/Standard/SetUnitsOp.cs
index fc818c6ff..7f0031993 100644
--- a/TestBenchFramework/BenchControl/MettlerToledo/Standard/SetUnitsOp.cs
+++ b/TestBenchFramework/BenchControl/MettlerToledo/Standard/SetUnitsOp.cs
@@ -37,7 +37,7 @@ namespace TBF.BenchControl.MettlerToledo.Standard
 		/// <summary>Start this operation</summary>
 		public void Start()
         {
-			log.Debug("{0} - Start()", balanceDev.Name);
+			log.DebugFormat("{0} - Start()", balanceDev.Name);
 			balanceDev.SetUnits(units);
 		}
 
@@ -56,7 +56,7 @@ namespace TBF.BenchControl.MettlerToledo.Standard
 		/// <summary>Stop this operation</summary>
 		public void Stop()
 		{
-			log.Debug("{0} - Stop()", balanceDev.Name);
+			log.DebugFormat("{0} - Stop()", balanceDev.Name);
 		}
 	}
 }
diff --git a/TestBenchFramework/BenchControl/MettlerToledo/Standard/TaringOp.cs b/TestBenchFramework/BenchControl/MettlerToledo/Standard/TaringOp.cs
index b4b15232f..6d89e3c9b 100644
--- a/TestBenchFramework/BenchControl/MettlerToledo/Standard/TaringOp.cs
+++ b/TestBenchFramework/BenchControl/MettlerToledo/Standard/TaringOp.cs
@@ -37,7 +37,7 @@ namespace TBF.BenchControl.MettlerToledo.Standard
 		/// <summary>Start this operation</summary>
 		public void Start()
 		{
-			log.Debug("{0} - Start()", balanceDev.Name);
+			log.DebugFormat("{0} - Start()", balanceDev.Name);
 			done = false;
 			balanceDev.Taring();
 		}
@@ -75,7 +75,7 @@ namespace TBF.BenchControl.MettlerToledo.Standard
 		/// <summary>Stop this operation</summary>
 		public void Stop()
 		{
-			log.Debug("{0} - Stop()", balanceDev.Name);
+			log.DebugFormat("{0} - Stop()", balanceDev.Name);
 		}
 	}
 }