diff --git a/src/main/java/org/asamk/Signal.java b/src/main/java/org/asamk/Signal.java
index 6e76f4a7..f8841da9 100644
--- a/src/main/java/org/asamk/Signal.java
+++ b/src/main/java/org/asamk/Signal.java
@@ -67,21 +67,21 @@ public interface Signal extends DBusInterface {
             String name, String about, String aboutEmoji, String avatarPath, boolean removeAvatar
     ) throws Error.Failure;
 
-    public String version();
+    String version();
 
-    public List<String> listNumbers();
+    List<String> listNumbers();
 
-    public List<String> getContactNumber(final String name) throws Error.Failure;
+    List<String> getContactNumber(final String name) throws Error.Failure;
 
-    public void quitGroup(final byte[] groupId) throws Error.GroupNotFound, Error.Failure;
+    void quitGroup(final byte[] groupId) throws Error.GroupNotFound, Error.Failure;
 
-    public boolean isContactBlocked(final String number);
+    boolean isContactBlocked(final String number);
 
-    public boolean isGroupBlocked(final byte[] groupId);
+    boolean isGroupBlocked(final byte[] groupId);
 
-    public boolean isMember(final byte[] groupId);
+    boolean isMember(final byte[] groupId);
 
-    public void joinGroup(final String groupLink) throws Error.Failure;
+    void joinGroup(final String groupLink) throws Error.Failure;
 
     class MessageReceived extends DBusSignal {