diff --git a/Cargo.toml b/Cargo.toml
index cc5d8f2..c74dabe 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -25,9 +25,9 @@ ureq = "2.4.0"
 configparser = "3.0.0"
 if_chain = "1.0.2"
 num_cpus = "1.13.0"
-which = { "7.0.2", optional = true }
-rcue = { "0.1.3", optional = true }
-hhmmss = { "0.1.0", optional = true }
+which = { version = "7.0.2", optional = true }
+rcue = { version = "0.1.3", optional = true }
+hhmmss = { version = "0.1.0", optional = true }
 
 [features]
 default = ["libav"]
diff --git a/src/cue.rs b/src/cue.rs
index 8b2773f..c5162e1 100644
--- a/src/cue.rs
+++ b/src/cue.rs
@@ -6,6 +6,7 @@
  *
  **/
 
+ #[cfg(feature = "ffmpeg")]
 extern crate rcue;
 
 #[cfg(feature = "ffmpeg")]
diff --git a/src/db.rs b/src/db.rs
index a0934bc..d7ee80c 100644
--- a/src/db.rs
+++ b/src/db.rs
@@ -286,6 +286,7 @@ impl Db {
                         let track_path = mpath.join(&dbtags.file);
                         if track_path.exists() {
                             let path = String::from(track_path.to_string_lossy());
+                            #[allow(unused_mut)] // ftags is mutable if using ffmpeg on commandline
                             let mut ftags = tags::read(&path, false);
 
                             #[cfg(feature = "ffmpeg")]