diff --git a/src/main/java/fr/xephi/authme/api/NewAPI.java b/src/main/java/fr/xephi/authme/api/NewAPI.java
index c77affa9..4ed3fd2e 100644
--- a/src/main/java/fr/xephi/authme/api/NewAPI.java
+++ b/src/main/java/fr/xephi/authme/api/NewAPI.java
@@ -221,6 +221,15 @@ public class NewAPI {
         management.performUnregisterByAdmin(null, player.getName(), player);
     }
 
+    /**
+     * Unregister a player from AuthMe by name.
+     *
+     * @param name the name of the player (case-insensitive)
+     */
+    public void forceUnregister(String name) {
+        management.performUnregisterByAdmin(null, name, Bukkit.getPlayer(name));
+    }
+
     /**
      * Get all the registered names (lowercase)
      *
diff --git a/src/main/java/fr/xephi/authme/datasource/MySQL.java b/src/main/java/fr/xephi/authme/datasource/MySQL.java
index dc08d7b4..da0ad602 100644
--- a/src/main/java/fr/xephi/authme/datasource/MySQL.java
+++ b/src/main/java/fr/xephi/authme/datasource/MySQL.java
@@ -612,7 +612,7 @@ public class MySQL implements DataSource {
                     }
                 }
             }
-            pst.setString(1, user);
+            pst.setString(1, user.toLowerCase());
             pst.executeUpdate();
             return true;
         } catch (SQLException ex) {
diff --git a/src/main/java/fr/xephi/authme/datasource/SQLite.java b/src/main/java/fr/xephi/authme/datasource/SQLite.java
index 8aae94c5..d9c847f4 100644
--- a/src/main/java/fr/xephi/authme/datasource/SQLite.java
+++ b/src/main/java/fr/xephi/authme/datasource/SQLite.java
@@ -335,7 +335,7 @@ public class SQLite implements DataSource {
         PreparedStatement pst = null;
         try {
             pst = con.prepareStatement("DELETE FROM " + tableName + " WHERE " + col.NAME + "=?;");
-            pst.setString(1, user);
+            pst.setString(1, user.toLowerCase());
             pst.executeUpdate();
             return true;
         } catch (SQLException ex) {
diff --git a/src/test/java/fr/xephi/authme/api/NewAPITest.java b/src/test/java/fr/xephi/authme/api/NewAPITest.java
index 35cc7d30..5ec009c0 100644
--- a/src/test/java/fr/xephi/authme/api/NewAPITest.java
+++ b/src/test/java/fr/xephi/authme/api/NewAPITest.java
@@ -212,6 +212,36 @@ public class NewAPITest {
         assertThat(result, contains(names));
     }
 
+    @Test
+    public void shouldUnregisterPlayer() {
+        // given
+        Player player = mock(Player.class);
+        String name = "Donald";
+        given(player.getName()).willReturn(name);
+
+        // when
+        api.forceUnregister(player);
+
+        // then
+        verify(management).performUnregisterByAdmin(null, name, player);
+    }
+
+    @Test
+    public void shouldUnregisterPlayerByName() {
+        // given
+        Server server = mock(Server.class);
+        ReflectionTestUtils.setField(Bukkit.class, null, "server", server);
+        String name = "tristan";
+        Player player = mock(Player.class);
+        given(server.getPlayer(name)).willReturn(player);
+
+        // when
+        api.forceUnregister(name);
+
+        // then
+        verify(management).performUnregisterByAdmin(null, name, player);
+    }
+
     private static Player mockPlayerWithName(String name) {
         Player player = mock(Player.class);
         given(player.getName()).willReturn(name);
diff --git a/src/test/java/fr/xephi/authme/datasource/AbstractDataSourceIntegrationTest.java b/src/test/java/fr/xephi/authme/datasource/AbstractDataSourceIntegrationTest.java
index 1223130c..424a2320 100644
--- a/src/test/java/fr/xephi/authme/datasource/AbstractDataSourceIntegrationTest.java
+++ b/src/test/java/fr/xephi/authme/datasource/AbstractDataSourceIntegrationTest.java
@@ -195,7 +195,7 @@ public abstract class AbstractDataSourceIntegrationTest {
         DataSource dataSource = getDataSource();
 
         // when
-        boolean response1 = dataSource.removeAuth("bobby");
+        boolean response1 = dataSource.removeAuth("Bobby");
         boolean response2 = dataSource.removeAuth("does-not-exist");
 
         // then