diff --git a/lib/src/commit.dart b/lib/src/commit.dart
index 162a9cf..52ac032 100644
--- a/lib/src/commit.dart
+++ b/lib/src/commit.dart
@@ -23,7 +23,6 @@ class Commit {
   ///
   /// Should be freed with `free()` to release allocated memory.
   Commit.lookup(Repository repo, Oid oid) {
-    libgit2.git_libgit2_init();
     _commitPointer = bindings.lookup(repo.pointer, oid.pointer);
   }
 
diff --git a/lib/src/oid.dart b/lib/src/oid.dart
index c241e84..43c5e7a 100644
--- a/lib/src/oid.dart
+++ b/lib/src/oid.dart
@@ -17,7 +17,6 @@ class Oid {
   ///
   /// Throws a [LibGit2Error] if error occured.
   Oid.fromSHA(Repository repository, String sha) {
-    libgit2.git_libgit2_init();
     if (sha.length == 40) {
       _oidPointer = bindings.fromSHA(sha);
     } else {
diff --git a/lib/src/reference.dart b/lib/src/reference.dart
index 5c80c9d..1321687 100644
--- a/lib/src/reference.dart
+++ b/lib/src/reference.dart
@@ -38,9 +38,7 @@ class References {
 class Reference {
   /// Initializes a new instance of the [Reference] class.
   /// Should be freed with `free()` to release allocated memory.
-  Reference(this._repoPointer, this._refPointer) {
-    libgit2.git_libgit2_init();
-  }
+  Reference(this._repoPointer, this._refPointer);
 
   /// Initializes a new instance of the [Reference] class by creating a new direct reference.
   ///
diff --git a/lib/src/revwalk.dart b/lib/src/revwalk.dart
index e511e35..433f084 100644
--- a/lib/src/revwalk.dart
+++ b/lib/src/revwalk.dart
@@ -5,13 +5,11 @@ import 'commit.dart';
 import 'oid.dart';
 import 'repository.dart';
 import 'enums.dart';
-import 'util.dart';
 
 class RevWalk {
   /// Initializes a new instance of the [RevWalk] class.
   /// Should be freed with `free()` to release allocated memory.
   RevWalk(Repository repo) {
-    libgit2.git_libgit2_init();
     _revWalkPointer = bindings.create(repo.pointer);
   }
 
diff --git a/lib/src/tree.dart b/lib/src/tree.dart
index 1fb9c68..211f3ae 100644
--- a/lib/src/tree.dart
+++ b/lib/src/tree.dart
@@ -18,7 +18,6 @@ class Tree {
   ///
   /// Should be freed with `free()` to release allocated memory.
   Tree.lookup(Repository repo, Oid id) {
-    libgit2.git_libgit2_init();
     _treePointer = bindings.lookup(repo.pointer, id.pointer);
   }