diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9cf3c9a..3a346b6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,8 @@
 
 ## [Unreleased](https://github.com/dalance/sv-parser/compare/v0.11.0...Unreleased) - ReleaseDate
 
+* [Fixed] include with comment error
+
 ## [v0.11.0](https://github.com/dalance/sv-parser/compare/v0.10.8...v0.11.0) - 2021-03-04
 
 * [Changed] keep directives after preprocess
diff --git a/sv-parser-pp/src/preprocess.rs b/sv-parser-pp/src/preprocess.rs
index a07d1e1..4e021b0 100644
--- a/sv-parser-pp/src/preprocess.rs
+++ b/sv-parser-pp/src/preprocess.rs
@@ -247,7 +247,10 @@ pub fn preprocess_str<T: AsRef<Path>, U: AsRef<Path>, V: BuildHasher>(
             }
             NodeEvent::Leave(RefNode::SourceDescriptionNotDirective(x)) => {
                 let locate: Locate = x.try_into().unwrap();
-                last_item_line = Some(locate.line);
+                // If the item is whitespace, last_item_line should not be updated
+                if !locate.str(s).trim().is_empty() {
+                    last_item_line = Some(locate.line);
+                }
             }
             NodeEvent::Leave(RefNode::CompilerDirective(x)) => {
                 let locate: Locate = x.try_into().unwrap();
@@ -1294,4 +1297,45 @@ endmodule
         );
         assert_eq!(ret.origin(70).unwrap().1, 50);
     }
+
+    #[test]
+    fn test20() {
+        let include_paths = [get_testcase("")];
+        let (ret, _) = preprocess(
+            get_testcase("test20.sv"),
+            &HashMap::new(),
+            &include_paths,
+            false,
+            false,
+        )
+        .unwrap();
+        assert_eq!(
+            ret.text(),
+            r##"module and_op (a, b, c);
+  // a
+  output a;
+input b, c;
+
+and a1 (a,b,c);
+
+
+endmodule
+"##
+        );
+        assert_eq!(
+            ret.origin(10).unwrap().0,
+            &PathBuf::from(get_testcase("test20.sv"))
+        );
+        assert_eq!(ret.origin(10).unwrap().1, 10);
+        assert_eq!(
+            ret.origin(60).unwrap().0,
+            &PathBuf::from(get_testcase("test2.svh"))
+        );
+        assert_eq!(ret.origin(60).unwrap().1, 74);
+        assert_eq!(
+            ret.origin(80).unwrap().0,
+            &PathBuf::from(get_testcase("test20.sv"))
+        );
+        assert_eq!(ret.origin(80).unwrap().1, 60);
+    }
 }