diff --git a/crates/typst-syntax/src/lexer.rs b/crates/typst-syntax/src/lexer.rs
index 156f9404..ecb800ba 100644
--- a/crates/typst-syntax/src/lexer.rs
+++ b/crates/typst-syntax/src/lexer.rs
@@ -145,10 +145,6 @@ impl Lexer<'_> {
                     depth += 1;
                     '_'
                 }
-                ('/', '/') => {
-                    self.line_comment();
-                    '_'
-                }
                 _ => c,
             }
         }
diff --git a/tests/typ/compiler/comment.typ b/tests/typ/compiler/comment.typ
index fcab3352..31025de6 100644
--- a/tests/typ/compiler/comment.typ
+++ b/tests/typ/compiler/comment.typ
@@ -17,13 +17,14 @@ C/*
 // End of block comment in line comment.
 // Hello */
 
-// Nested line comment.
-/*//*/
-Still comment.
-*/
-
+// Nested "//" doesn't count as line comment.
+/* // */
 E
 
+/*//*/
+This is a comment.
+*/*/
+
 ---
 // End should not appear without start.
 // Error: 7-9 unexpected end of block comment