diff --git a/src/error.rs b/src/error.rs
index d4666c7..5d089a9 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -49,6 +49,12 @@ pub enum ErrorKind {
     #[fail(display = "IoError: {}", _0)]
     Io(String),
 
+    #[fail(
+        display = "VersionError: required_version: {:?}, specified_version: {:?}",
+        _0, _1
+    )]
+    VersionError(String, String),
+
     /// Hints that destructuring should not be exhaustive.
     ///
     /// This enum may grow additional variants, so this makes sure clients
@@ -171,6 +177,17 @@ impl Error {
     pub(crate) fn io<T: ToString>(value: T) -> Self {
         Self::from(ErrorKind::Io(value.to_string()))
     }
+
+    pub(crate) fn required_version<T, U>(required_version: T, specified_version: U) -> Self
+    where
+        T: ToString,
+        U: ToString,
+    {
+        Self::from(ErrorKind::VersionError(
+            required_version.to_string(),
+            specified_version.to_string(),
+        ))
+    }
 }
 
 impl From<std::num::ParseIntError> for Error {
diff --git a/src/master_playlist.rs b/src/master_playlist.rs
index 85ba8fe..683640d 100644
--- a/src/master_playlist.rs
+++ b/src/master_playlist.rs
@@ -73,9 +73,8 @@ impl MasterPlaylistBuilder {
         let required_version = self.required_version();
         let specified_version = self.version.unwrap_or(required_version);
 
-        if required_version <= specified_version {
-            // "required_version:{}, specified_version:{}"
-            return Err(Error::invalid_input());
+        if required_version < specified_version {
+            return Err(Error::required_version(required_version, specified_version));
         }
 
         (self.validate_stream_inf_tags())?;
@@ -379,5 +378,21 @@ mod tests {
     use super::*;
 
     #[test]
-    fn test_parser() {}
+    fn test_parser() {
+        let playlist = r#"
+        #EXTM3U
+        #EXT-X-STREAM-INF:BANDWIDTH=150000,RESOLUTION=416x234,CODECS="avc1.42e00a,mp4a.40.2"
+        http://example.com/low/index.m3u8
+        #EXT-X-STREAM-INF:BANDWIDTH=240000,RESOLUTION=416x234,CODECS="avc1.42e00a,mp4a.40.2"
+        http://example.com/lo_mid/index.m3u8
+        #EXT-X-STREAM-INF:BANDWIDTH=440000,RESOLUTION=416x234,CODECS="avc1.42e00a,mp4a.40.2"
+        http://example.com/hi_mid/index.m3u8
+        #EXT-X-STREAM-INF:BANDWIDTH=640000,RESOLUTION=640x360,CODECS="avc1.42e00a,mp4a.40.2"
+        http://example.com/high/index.m3u8
+        #EXT-X-STREAM-INF:BANDWIDTH=64000,CODECS="mp4a.40.5"
+        http://example.com/audio/index.m3u8
+        "#
+        .parse::<MasterPlaylist>()
+        .unwrap();
+    }
 }