diff --git a/src/git.cc b/src/git.cc
index 822a65c..d2ae2c0 100644
--- a/src/git.cc
+++ b/src/git.cc
@@ -17,7 +17,7 @@ std::string Git::Error::message() noexcept {
     return last_error->message;
 }
 
-Git::Repository::Diff::Diff(const boost::filesystem::path &path, git_repository *repository) : repository(repository) {
+Git::Repository::Diff::Diff(const boost::filesystem::path &path, git_repository *repository) {
   blob = std::shared_ptr<git_blob>(nullptr, [](git_blob *blob) {
     if(blob)
       git_blob_free(blob);
diff --git a/src/git.h b/src/git.h
index ea80b05..3945c7b 100644
--- a/src/git.h
+++ b/src/git.h
@@ -43,7 +43,6 @@ public:
     private:
       friend class Repository;
       Diff(const boost::filesystem::path &path, git_repository *repository);
-      git_repository *repository = nullptr;
       std::shared_ptr<git_blob> blob = nullptr;
       git_diff_options options;
       static int hunk_cb(const git_diff_delta *delta, const git_diff_hunk *hunk, void *payload) noexcept;