diff --git a/src/cmd/compile/internal/types2/typeparam.go b/src/cmd/compile/internal/types2/typeparam.go
index 9ad064906f..e22981e1ad 100644
--- a/src/cmd/compile/internal/types2/typeparam.go
+++ b/src/cmd/compile/internal/types2/typeparam.go
@@ -25,8 +25,8 @@ type TypeParam struct {
 }
 
 // NewTypeParam returns a new TypeParam. Type parameters may be set on a Named
-// or Signature type by calling SetTypeParams. Setting a type parameter on more
-// than one type will result in a panic.
+// type by calling SetTypeParams. Setting a type parameter on more than one type
+// will result in a panic.
 //
 // The constraint argument can be nil, and set later via SetConstraint. If the
 // constraint is non-nil, it must be fully defined.
diff --git a/src/go/types/typeparam.go b/src/go/types/typeparam.go
index 58a02de860..789b63d7a1 100644
--- a/src/go/types/typeparam.go
+++ b/src/go/types/typeparam.go
@@ -28,8 +28,8 @@ type TypeParam struct {
 }
 
 // NewTypeParam returns a new TypeParam. Type parameters may be set on a Named
-// or Signature type by calling SetTypeParams. Setting a type parameter on more
-// than one type will result in a panic.
+// type by calling SetTypeParams. Setting a type parameter on more than one type
+// will result in a panic.
 //
 // The constraint argument can be nil, and set later via SetConstraint. If the
 // constraint is non-nil, it must be fully defined.