diff --git a/CodeOnlyStoredProcedure/StoredProcedureParameters/InputOutputParameter.cs b/CodeOnlyStoredProcedure/StoredProcedureParameters/InputOutputParameter.cs
index 54abdc4..0d6d830 100644
--- a/CodeOnlyStoredProcedure/StoredProcedureParameters/InputOutputParameter.cs
+++ b/CodeOnlyStoredProcedure/StoredProcedureParameters/InputOutputParameter.cs
@@ -20,7 +20,7 @@ public InputOutputParameter(string name, Action<object> setter, object value, Db
             Contract.Requires(!string.IsNullOrWhiteSpace(name));
             Contract.Requires(setter != null);
 
-            ParameterName  = name.StartsWith("@") ? name.Substring(1) : name;
+            ParameterName  = name;
             this.Value     = value;
             this.DbType    = dbType;
             this.setter    = setter;
diff --git a/CodeOnlyStoredProcedure/StoredProcedureParameters/InputParameter.cs b/CodeOnlyStoredProcedure/StoredProcedureParameters/InputParameter.cs
index 26579fd..e2eef6f 100644
--- a/CodeOnlyStoredProcedure/StoredProcedureParameters/InputParameter.cs
+++ b/CodeOnlyStoredProcedure/StoredProcedureParameters/InputParameter.cs
@@ -12,7 +12,7 @@ internal class InputParameter : IInputStoredProcedureParameter
         public InputParameter(string name, object value, DbType? dbType = null)
         {
             Value         = value;
-            ParameterName = name.StartsWith("@") ? name.Substring(1) : name;
+            ParameterName = name;
             DbType        = dbType;
         }
 
diff --git a/CodeOnlyStoredProcedure/StoredProcedureParameters/OutputParameter.cs b/CodeOnlyStoredProcedure/StoredProcedureParameters/OutputParameter.cs
index d0ae40e..895f051 100644
--- a/CodeOnlyStoredProcedure/StoredProcedureParameters/OutputParameter.cs
+++ b/CodeOnlyStoredProcedure/StoredProcedureParameters/OutputParameter.cs
@@ -19,7 +19,7 @@ public OutputParameter(string name, Action<object> setter, DbType? dbType = null
             Contract.Requires(!string.IsNullOrWhiteSpace(name));
             Contract.Requires(setter != null);
 
-            this.ParameterName = name.StartsWith("@") ? name.Substring(1) : name;
+            this.ParameterName = name;
             this.setter        = setter;
             this.DbType        = dbType;
             this.Size          = size;
diff --git a/CodeOnlyStoredProcedure/StoredProcedureParameters/TableValuedParameter.cs b/CodeOnlyStoredProcedure/StoredProcedureParameters/TableValuedParameter.cs
index 050ce16..12e89e3 100644
--- a/CodeOnlyStoredProcedure/StoredProcedureParameters/TableValuedParameter.cs
+++ b/CodeOnlyStoredProcedure/StoredProcedureParameters/TableValuedParameter.cs
@@ -26,7 +26,7 @@ public TableValuedParameter(string name, IEnumerable values, Type valueType, str
             Contract.Requires(!string.IsNullOrWhiteSpace(tableTypeName));
             Contract.Requires(!string.IsNullOrWhiteSpace(tableTypeSchema));
 
-            ParameterName  = name.StartsWith("@") ? name.Substring(1) : name;
+            ParameterName  = name;
             this.values    = values;
             this.valueType = valueType;
             this.TypeName  = string.Format("[{0}].[{1}]", tableTypeSchema, tableTypeName);
diff --git a/CodeOnlyTests/StoredProcedureParameters/InputOutputParameterTests.cs b/CodeOnlyTests/StoredProcedureParameters/InputOutputParameterTests.cs
index 5845479..fafd41b 100644
--- a/CodeOnlyTests/StoredProcedureParameters/InputOutputParameterTests.cs
+++ b/CodeOnlyTests/StoredProcedureParameters/InputOutputParameterTests.cs
@@ -90,11 +90,5 @@ public void NullValueToStringReturnsCorrectString()
         {
             new InputOutputParameter("Foo", o => { }, null).ToString().Should().Be("[InOut] @Foo = '{null}'");
         }
-
-        [TestMethod]
-        public void ToStringDoesNotDisplayExtraAts()
-        {
-            new InputOutputParameter("@Foo", o => { }, null).ToString().Should().Be("[InOut] @Foo = 'Bar'");
-        }
     }
 }
diff --git a/CodeOnlyTests/StoredProcedureParameters/InputParameterTests.cs b/CodeOnlyTests/StoredProcedureParameters/InputParameterTests.cs
index 6526991..ed62e80 100644
--- a/CodeOnlyTests/StoredProcedureParameters/InputParameterTests.cs
+++ b/CodeOnlyTests/StoredProcedureParameters/InputParameterTests.cs
@@ -76,11 +76,5 @@ public void NullValueToStringReturnsCorrectString()
         {
             new InputParameter("Foo", null).ToString().Should().Be("@Foo = '{null}'");
         }
-
-        [TestMethod]
-        public void ToStringDoesNotDisplayExtraAts()
-        {
-            new InputParameter("@Foo", "Bar").ToString().Should().Be("@Foo = 'Bar'");
-        }
     }
 }
diff --git a/CodeOnlyTests/StoredProcedureParameters/OutputParameterTests.cs b/CodeOnlyTests/StoredProcedureParameters/OutputParameterTests.cs
index 7cd0660..28a7abf 100644
--- a/CodeOnlyTests/StoredProcedureParameters/OutputParameterTests.cs
+++ b/CodeOnlyTests/StoredProcedureParameters/OutputParameterTests.cs
@@ -44,11 +44,5 @@ public void ToStringRepresentsTheParameter()
         {
             new OutputParameter("Foo", o => { }).ToString().Should().Be("[Out] @Foo");
         }
-
-        [TestMethod]
-        public void ToStringDoesNotDisplayExtraAts()
-        {
-            new OutputParameter("@Foo", o => { }).ToString().Should().Be("[Out] @Foo");
-        }
     }
 }
diff --git a/CodeOnlyTests/StoredProcedureParameters/TableValuedParameterTests.cs b/CodeOnlyTests/StoredProcedureParameters/TableValuedParameterTests.cs
index 272b143..8b545c5 100644
--- a/CodeOnlyTests/StoredProcedureParameters/TableValuedParameterTests.cs
+++ b/CodeOnlyTests/StoredProcedureParameters/TableValuedParameterTests.cs
@@ -83,13 +83,6 @@ public void ToStringRepresentsTheParameter()
                 .Should().Be(string.Format("@Foo = IEnumerable<{0}> (1 items)", typeof(TVP)));
         }
 
-        [TestMethod]
-        public void ToStringDoesNotDisplayExtraAts()
-        {
-            new TableValuedParameter("@Foo", new[] { new TVP(42) }, typeof(TVP), "CustomInt", "Schema").ToString()
-                .Should().Be(string.Format("@Foo = IEnumerable<{0}> (1 items)", typeof(TVP)));
-        }
-
         private class TVP
         {
             public int Int { get; set; }