diff --git a/Mono.Cecil/GenericParameter.cs b/Mono.Cecil/GenericParameter.cs
index de746449b..838646c08 100644
--- a/Mono.Cecil/GenericParameter.cs
+++ b/Mono.Cecil/GenericParameter.cs
@@ -150,6 +150,11 @@ public bool IsContravariant {
 			set { attributes = attributes.SetMaskedAttributes ((ushort) GenericParameterAttributes.VarianceMask, (ushort) GenericParameterAttributes.Contravariant, value); }
 		}
 
+		public bool HasNoSpecialConstraint {
+			get { return attributes.GetMaskedAttributes ((ushort) GenericParameterAttributes.SpecialConstraintMask, (ushort) GenericParameterAttributes.NoSpecialConstraint); }
+			set { attributes = attributes.SetMaskedAttributes ((ushort) GenericParameterAttributes.SpecialConstraintMask, (ushort) GenericParameterAttributes.NoSpecialConstraint, value); }
+		}
+
 		public bool HasReferenceTypeConstraint {
 			get { return attributes.GetAttributes ((ushort) GenericParameterAttributes.ReferenceTypeConstraint); }
 			set { attributes = attributes.SetAttributes ((ushort) GenericParameterAttributes.ReferenceTypeConstraint, value); }
@@ -165,9 +170,9 @@ public bool HasDefaultConstructorConstraint {
 			set { attributes = attributes.SetAttributes ((ushort) GenericParameterAttributes.DefaultConstructorConstraint, value); }
 		}
 
-		public bool AllowByRefLikeConstraint {
-			get { return attributes.GetAttributes ((ushort) GenericParameterAttributes.AllowByRefLikeConstraint); }
-			set { attributes = attributes.SetAttributes ((ushort) GenericParameterAttributes.AllowByRefLikeConstraint, value); }
+		public bool AllowsByRefLike {
+			get { return attributes.GetAttributes ((ushort) GenericParameterAttributes.AllowByRefLike); }
+			set { attributes = attributes.SetAttributes ((ushort) GenericParameterAttributes.AllowByRefLike, value); }
 		}
 
 		#endregion
diff --git a/Mono.Cecil/GenericParameterAttributes.cs b/Mono.Cecil/GenericParameterAttributes.cs
index 51f094f47..3c2f0afd1 100644
--- a/Mono.Cecil/GenericParameterAttributes.cs
+++ b/Mono.Cecil/GenericParameterAttributes.cs
@@ -19,10 +19,11 @@ public enum GenericParameterAttributes : ushort {
 		Covariant		= 0x0001,
 		Contravariant	= 0x0002,
 
-		SpecialConstraintMask			= 0x001c,
+		SpecialConstraintMask			= 0x003c,
+		NoSpecialConstraint             = 0x0000,
 		ReferenceTypeConstraint			= 0x0004,
 		NotNullableValueTypeConstraint	= 0x0008,
 		DefaultConstructorConstraint	= 0x0010,
-		AllowByRefLikeConstraint = 0x0020,
+		AllowByRefLike					= 0x0020,
 	}
 }