diff --git a/runtime/Go/antlr/v4/lexer.go b/runtime/Go/antlr/v4/lexer.go
index e5594b2168..c1faf81e4e 100644
--- a/runtime/Go/antlr/v4/lexer.go
+++ b/runtime/Go/antlr/v4/lexer.go
@@ -159,7 +159,7 @@ func (b *BaseLexer) GetTokenFactory() TokenFactory {
 	return b.factory
 }
 
-func (b *BaseLexer) setTokenFactory(f TokenFactory) {
+func (b *BaseLexer) SetTokenFactory(f TokenFactory) {
 	b.factory = f
 }
 
diff --git a/runtime/Go/antlr/v4/parser.go b/runtime/Go/antlr/v4/parser.go
index fb57ac15db..5ca4ac7e15 100644
--- a/runtime/Go/antlr/v4/parser.go
+++ b/runtime/Go/antlr/v4/parser.go
@@ -317,8 +317,8 @@ func (p *BaseParser) GetTokenFactory() TokenFactory {
 }
 
 // setTokenFactory is used to tell our token source and error strategy about a new way to create tokens.
-func (p *BaseParser) setTokenFactory(factory TokenFactory) {
-	p.input.GetTokenSource().setTokenFactory(factory)
+func (p *BaseParser) SetTokenFactory(factory TokenFactory) {
+	p.input.GetTokenSource().SetTokenFactory(factory)
 }
 
 // GetATNWithBypassAlts - the ATN with bypass alternatives is expensive to create, so we create it
diff --git a/runtime/Go/antlr/v4/token_source.go b/runtime/Go/antlr/v4/token_source.go
index a3f36eaa67..1040aa1bfc 100644
--- a/runtime/Go/antlr/v4/token_source.go
+++ b/runtime/Go/antlr/v4/token_source.go
@@ -12,6 +12,6 @@ type TokenSource interface {
 	GetCharPositionInLine() int
 	GetInputStream() CharStream
 	GetSourceName() string
-	setTokenFactory(factory TokenFactory)
+	SetTokenFactory(factory TokenFactory)
 	GetTokenFactory() TokenFactory
 }