diff --git a/src/processor.rs b/src/processor.rs
index b206d06..533eb20 100644
--- a/src/processor.rs
+++ b/src/processor.rs
@@ -87,7 +87,7 @@ impl Line {
     ) -> Coalition {
         if Coalition::line_contains_coalition(line) {
             let coalition = Coalition::from_line(line);
-            coalition_ids.insert(id, coalition.clone());
+            coalition_ids.insert(id, &coalition);
             coalition
         } else {
             Coalition::Unknown
diff --git a/src/tacview.rs b/src/tacview.rs
index 2e8735a..44f2908 100644
--- a/src/tacview.rs
+++ b/src/tacview.rs
@@ -40,13 +40,12 @@ impl<'a> CoalitionIDs<'a> {
         Self { blue, red, purple }
     }
 
-    pub fn insert(&mut self, id: &'a str, coalition: Coalition) {
+    pub fn insert(&mut self, id: &'a str, coalition: &Coalition) {
         match coalition {
             Coalition::Blue => self.blue.insert(id),
             Coalition::Red => self.red.insert(id),
             Coalition::Purple => self.purple.insert(id),
-            Coalition::All => false,
-            Coalition::Unknown => false,
+            Coalition::All | Coalition::Unknown => false,
         };
     }
 }