diff --git a/src/lexer.cpp b/src/lexer.cpp
index 4acf369..6b62f68 100644
--- a/src/lexer.cpp
+++ b/src/lexer.cpp
@@ -61,7 +61,8 @@ void Lexer::skip_whitespace() {
 }
 
 void Lexer::skip_comment() {
-    if (peek() == '/' && peek_next() == '/') {
+    if (peek() == '/') {
+        advance();
         while (peek() != '\n' && !is_at_end()) {
             advance();
         }