diff --git a/parser/src/error.rs b/parser/src/error.rs
index 27fe46956..63d4aef78 100644
--- a/parser/src/error.rs
+++ b/parser/src/error.rs
@@ -14,9 +14,6 @@ pub enum Error {
     /// Missing `]`
     #[error("non-terminated bracket at {0:?}")]
     UnterminatedBracket(#[label("here")] miette::SourceSpan),
-    /// Missing `*/`
-    #[error("non-terminated block comment at {0:?}")]
-    UnterminatedBlockComment(#[label("here")] miette::SourceSpan),
     /// Invalid parameter name
     #[error("bad variable name at {0:?}")]
     BadVariableName(#[label("here")] miette::SourceSpan),
diff --git a/parser/src/lexer.rs b/parser/src/lexer.rs
index aab03f36a..0876e4103 100644
--- a/parser/src/lexer.rs
+++ b/parser/src/lexer.rs
@@ -400,6 +400,9 @@ impl<'a> Lexer<'a> {
         let start = self.offset;
         self.eat_and_assert(|b| b == b'/');
         match self.peek() {
+            // C-style comments begin with "/*" and extend up to and
+            // including the next "*/" character pair or until
+            // the end of input, whichever comes first.
             Some(b'*') => {
                 self.eat_and_assert(|b| b == b'*');
                 loop {
@@ -412,19 +415,11 @@ impl<'a> Lexer<'a> {
                                     self.eat_and_assert(|b| b == b'/');
                                     break; // End of block comment
                                 }
-                                None => {
-                                    return Err(Error::UnterminatedBlockComment(
-                                        (start, self.offset - start).into(),
-                                    ))
-                                }
+                                None => break,
                                 _ => {}
                             }
                         }
-                        None => {
-                            return Err(Error::UnterminatedBlockComment(
-                                (start, self.offset - start).into(),
-                            ))
-                        }
+                        None => break,
                         _ => unreachable!(), // We should not reach here
                     }
                 }
@@ -1250,6 +1245,21 @@ mod tests {
                     token_type: Some(TokenType::TK_FLOAT),
                 },
             ),
+            // issue 3425
+            (
+                b"/*".as_slice(),
+                Token {
+                    value: b"/*".as_slice(),
+                    token_type: None,
+                },
+            ),
+            (
+                b"/**".as_slice(),
+                Token {
+                    value: b"/**".as_slice(),
+                    token_type: None,
+                },
+            ),
         ];
 
         for (input, expected) in test_cases {