diff --git a/src/debug/dwarf/entry.go b/src/debug/dwarf/entry.go
index d459f30..2742ae0 100644
--- a/src/debug/dwarf/entry.go
+++ b/src/debug/dwarf/entry.go
@@ -112,7 +112,7 @@
 //
 // A common idiom is to merge the check for nil return with
 // the check that the value has the expected dynamic type, as in:
-//	v, ok := e.Val(AttrSibling).(int64);
+//	v, ok := e.Val(AttrSibling).(int64)
 //
 func (e *Entry) Val(a Attr) interface{} {
 	for _, f := range e.Field {
diff --git a/src/encoding/asn1/marshal.go b/src/encoding/asn1/marshal.go
index b2f104b..bf92c04 100644
--- a/src/encoding/asn1/marshal.go
+++ b/src/encoding/asn1/marshal.go
@@ -18,7 +18,7 @@
 // A forkableWriter is an in-memory buffer that can be
 // 'forked' to create new forkableWriters that bracket the
 // original.  After
-//    pre, post := w.fork();
+//    pre, post := w.fork()
 // the overall sequence of bytes represented is logically w+pre+post.
 type forkableWriter struct {
 	*bytes.Buffer
diff --git a/src/go/ast/ast.go b/src/go/ast/ast.go
index d21390e..5ab4283 100644
--- a/src/go/ast/ast.go
+++ b/src/go/ast/ast.go
@@ -486,7 +486,7 @@
 func (x *ChanType) End() token.Pos      { return x.Value.End() }
 
 // exprNode() ensures that only expression/type nodes can be
-// assigned to an ExprNode.
+// assigned to an Expr.
 //
 func (*BadExpr) exprNode()        {}
 func (*Ident) exprNode()          {}
@@ -787,7 +787,7 @@
 func (s *RangeStmt) End() token.Pos  { return s.Body.End() }
 
 // stmtNode() ensures that only statement nodes can be
-// assigned to a StmtNode.
+// assigned to a Stmt.
 //
 func (*BadStmt) stmtNode()        {}
 func (*DeclStmt) stmtNode()       {}
@@ -951,7 +951,7 @@
 }
 
 // declNode() ensures that only declaration nodes can be
-// assigned to a DeclNode.
+// assigned to a Decl.
 //
 func (*BadDecl) declNode()  {}
 func (*GenDecl) declNode()  {}