diff --git a/sv-parser-pp/src/preprocess.rs b/sv-parser-pp/src/preprocess.rs
index 978355e..c697715 100644
--- a/sv-parser-pp/src/preprocess.rs
+++ b/sv-parser-pp/src/preprocess.rs
@@ -964,7 +964,7 @@ mod tests {
     #[test]
     fn macro_parameters_defaultvalue() {
         let (ret, _) = preprocess(
-            testfile_path("test3.sv"),
+            testfile_path("macro_parameters_defaultvalue.sv"),
             &HashMap::new(),
             &[] as &[String],
             false,
@@ -973,7 +973,7 @@ mod tests {
         .unwrap();
         assert_eq!(
             ret.text(),
-            testfile_contents("expected/macro_parameters_defaultvalue")
+            testfile_contents("expected/macro_parameters_defaultvalue.sv")
         );
     }
 
diff --git a/sv-parser-pp/testcases/expected/macro_parameters_defaultvalue b/sv-parser-pp/testcases/expected/macro_parameters_defaultvalue.sv
similarity index 100%
rename from sv-parser-pp/testcases/expected/macro_parameters_defaultvalue
rename to sv-parser-pp/testcases/expected/macro_parameters_defaultvalue.sv
diff --git a/sv-parser-pp/testcases/test3.sv b/sv-parser-pp/testcases/macro_parameters_defaultvalue.sv
similarity index 100%
rename from sv-parser-pp/testcases/test3.sv
rename to sv-parser-pp/testcases/macro_parameters_defaultvalue.sv