diff --git a/README.md b/README.md
index da4a14f35e8a50d17a71929d0c7510a87036da48..f5baf9e07ac6b616a04e9e2ab6a4297a8a8ccd9b 100644
--- a/README.md
+++ b/README.md
@@ -146,7 +146,7 @@ FnDef : FnProto Block
 
 ParamDeclList : token(LParen) list(ParamDecl, token(Comma)) token(RParen)
 
-ParamDecl : token(Symbol) token(Colon) Type | token(Ellipse)
+ParamDecl : token(Symbol) token(Colon) Type | token(Ellipsis)
 
 Type : token(Symbol) | token(Unreachable) | token(Void) | PointerType | ArrayType
 
diff --git a/src/parser.cpp b/src/parser.cpp
index 0ef3e6664bee0d52978d3f0fa8606edd6e59b2f9..6c8a54ad9e471503813fed27afb685c389a742ec 100644
--- a/src/parser.cpp
+++ b/src/parser.cpp
@@ -517,7 +517,7 @@ static AstNode *ast_parse_type(ParseContext *pc, int token_index, int *new_token
 }
 
 /*
-ParamDecl : token(Symbol) token(Colon) Type | token(Ellipse)
+ParamDecl : token(Symbol) token(Colon) Type | token(Ellipsis)
 */
 static AstNode *ast_parse_param_decl(ParseContext *pc, int token_index, int *new_token_index) {
     Token *param_name = &pc->tokens->at(token_index);
@@ -536,7 +536,7 @@ static AstNode *ast_parse_param_decl(ParseContext *pc, int token_index, int *new
 
         *new_token_index = token_index;
         return node;
-    } else if (param_name->id == TokenIdEllipse) {
+    } else if (param_name->id == TokenIdEllipsis) {
         *new_token_index = token_index;
         return nullptr;
     } else {
diff --git a/src/tokenizer.cpp b/src/tokenizer.cpp
index e1249bbed17192ccd35ac36bef0442a542f9d25c..2419bfc3ad9f71582a799565971afeb6df70a4b2 100644
--- a/src/tokenizer.cpp
+++ b/src/tokenizer.cpp
@@ -337,7 +337,7 @@ void tokenize(Buf *buf, Tokenization *out) {
                 switch (c) {
                     case '.':
                         t.state = TokenizeStateDotDot;
-                        t.cur_tok->id = TokenIdEllipse;
+                        t.cur_tok->id = TokenIdEllipsis;
                         break;
                     default:
                         t.pos -= 1;
@@ -672,7 +672,7 @@ static const char * token_name(Token *token) {
         case TokenIdSlash: return "Slash";
         case TokenIdPercent: return "Percent";
         case TokenIdDot: return "Dot";
-        case TokenIdEllipse: return "Ellipse";
+        case TokenIdEllipsis: return "Ellipsis";
     }
     return "(invalid token)";
 }
diff --git a/src/tokenizer.hpp b/src/tokenizer.hpp
index 6f15b5aed5a00e94c1582ea2e94c7509af7f4c47..56031d71842849cb69ed1833b0358cfca04768e4 100644
--- a/src/tokenizer.hpp
+++ b/src/tokenizer.hpp
@@ -65,7 +65,7 @@ enum TokenId {
     TokenIdSlash,
     TokenIdPercent,
     TokenIdDot,
-    TokenIdEllipse,
+    TokenIdEllipsis,
 };
 
 struct Token {