diff --git a/src/explorer/mod.rs b/src/explorer/mod.rs
index 7c570db..19fdc70 100644
--- a/src/explorer/mod.rs
+++ b/src/explorer/mod.rs
@@ -204,7 +204,7 @@ impl<'a> GitExplorer {
     }
 
     fn paint_branch(
-        &self,
+        &mut self,
         mut commits: Vec<Commit>,
         mut output: Vec<GraphNode>,
         limit_stack: Option<usize>,
@@ -318,7 +318,7 @@ impl<'a> GitExplorer {
         [output, vec_str].concat()
     }
 
-    pub fn paint_commit_track(&self, commit: Commit, branches: Vec<BranchData>) -> Vec<GraphNode> {
+    pub fn paint_commit_track(&mut self, commit: Commit, branches: Vec<BranchData>) -> Vec<GraphNode> {
         // let limit_stack = 1000; // Works fine
         let limit_stack = 500; // Works fine
         // let limit_stack = 10000; // Works, but it is unhandeable :/