diff --git a/src/main/java/fr/xephi/authme/command/executable/authme/PurgeCommand.java b/src/main/java/fr/xephi/authme/command/executable/authme/PurgeCommand.java
index a0811cfed..db91aad65 100644
--- a/src/main/java/fr/xephi/authme/command/executable/authme/PurgeCommand.java
+++ b/src/main/java/fr/xephi/authme/command/executable/authme/PurgeCommand.java
@@ -4,9 +4,7 @@ import fr.xephi.authme.AuthMe;
 import fr.xephi.authme.command.CommandService;
 import fr.xephi.authme.command.ExecutableCommand;
 import fr.xephi.authme.datasource.DataSource;
-import fr.xephi.authme.hooks.PluginHooks;
 import fr.xephi.authme.task.PurgeTask;
-import fr.xephi.authme.util.BukkitService;
 import org.bukkit.ChatColor;
 import org.bukkit.command.CommandSender;
 
@@ -26,12 +24,6 @@ public class PurgeCommand implements ExecutableCommand {
     @Inject
     private DataSource dataSource;
 
-    @Inject
-    private PluginHooks pluginHooks;
-
-    @Inject
-    private BukkitService bukkitService;
-
     @Inject
     private AuthMe plugin;
 
diff --git a/src/main/java/fr/xephi/authme/initialization/FieldInjection.java b/src/main/java/fr/xephi/authme/initialization/FieldInjection.java
index b8112b876..096c5f528 100644
--- a/src/main/java/fr/xephi/authme/initialization/FieldInjection.java
+++ b/src/main/java/fr/xephi/authme/initialization/FieldInjection.java
@@ -114,6 +114,7 @@ class FieldInjection<T> implements Injection<T> {
         return null;
     }
 
+    @SuppressWarnings("unchecked")
     private static <T> Constructor<T> getDefaultConstructor(Class<T> clazz) {
         try {
             Constructor<?> defaultConstructor = clazz.getDeclaredConstructor();
diff --git a/src/test/java/fr/xephi/authme/initialization/samples/InvalidPostConstruct.java b/src/test/java/fr/xephi/authme/initialization/samples/InvalidPostConstruct.java
index 80b6c83ec..e6d6e3a69 100644
--- a/src/test/java/fr/xephi/authme/initialization/samples/InvalidPostConstruct.java
+++ b/src/test/java/fr/xephi/authme/initialization/samples/InvalidPostConstruct.java
@@ -9,11 +9,6 @@ import javax.inject.Inject;
 public abstract class InvalidPostConstruct {
 
     public static final class WithParams {
-        @Inject
-        private AlphaService alphaService;
-        @Inject
-        private ProvidedClass providedClass;
-
         WithParams() { }
 
         @PostConstruct
@@ -41,9 +36,6 @@ public abstract class InvalidPostConstruct {
     }
 
     public static final class NotVoidReturnType {
-        @Inject
-        private ProvidedClass providedClass;
-
         @PostConstruct
         public int returnsInt() {
             return 42;
@@ -51,9 +43,6 @@ public abstract class InvalidPostConstruct {
     }
 
     public static final class MultiplePostConstructs {
-        @Inject
-        private ProvidedClass providedClass;
-
         @PostConstruct
         public void postConstruct1() {
             // --