diff --git a/authme-core/src/main/java/fr/xephi/authme/security/totp/TotpAuthenticator.java b/authme-core/src/main/java/fr/xephi/authme/security/totp/TotpAuthenticator.java
index c7256af9e0..f6df3bc6b3 100644
--- a/authme-core/src/main/java/fr/xephi/authme/security/totp/TotpAuthenticator.java
+++ b/authme-core/src/main/java/fr/xephi/authme/security/totp/TotpAuthenticator.java
@@ -69,8 +69,9 @@ public boolean checkCode(String playerName, String totpKey, String inputCode) {
 
     public TotpGenerationResult generateTotpKey(Player player) {
         GoogleAuthenticatorKey credentials = authenticator.createCredentials();
-        String otpAuthUrl = GoogleAuthenticatorQRGenerator.getOtpAuthTotpURL(
-            settings.getProperty(PluginSettings.SERVER_NAME), player.getName(), credentials);
+        // The otpauth label is "issuer:account", so the issuer must not contain a colon
+        String issuer = settings.getProperty(PluginSettings.SERVER_NAME).replace(':', '-');
+        String otpAuthUrl = GoogleAuthenticatorQRGenerator.getOtpAuthTotpURL(issuer, player.getName(), credentials);
         String qrCodeUrl = "https://api.qrserver.com/v1/create-qr-code/?data="
             + URLEncoder.encode(otpAuthUrl, StandardCharsets.UTF_8)
             + "&size=200x200&ecc=M&margin=10";
diff --git a/authme-core/src/test/java/fr/xephi/authme/security/totp/TotpAuthenticatorTest.java b/authme-core/src/test/java/fr/xephi/authme/security/totp/TotpAuthenticatorTest.java
index da45004cf6..ac6c3ea937 100644
--- a/authme-core/src/test/java/fr/xephi/authme/security/totp/TotpAuthenticatorTest.java
+++ b/authme-core/src/test/java/fr/xephi/authme/security/totp/TotpAuthenticatorTest.java
@@ -15,6 +15,9 @@
 import org.mockito.Mock;
 import org.mockito.junit.jupiter.MockitoExtension;
 
+import java.net.URLEncoder;
+import java.nio.charset.StandardCharsets;
+
 import static fr.xephi.authme.AuthMeMatchers.stringWithLength;
 import static org.hamcrest.MatcherAssert.assertThat;
 import static org.hamcrest.Matchers.containsString;
@@ -69,6 +72,25 @@ void shouldGenerateTotpKey() {
         assertThat(key1.getTotpKey(), not(equalTo(key2.getTotpKey())));
     }
 
+    @Test
+    void shouldGenerateTotpKeyForServerNameWithColon() {
+        // given
+        totpAuthenticator = new TotpAuthenticator(settings);
+
+        Player player = mock(Player.class);
+        given(player.getName()).willReturn("Bobby");
+        given(settings.getProperty(PluginSettings.SERVER_NAME)).willReturn("UT:Rebirth");
+
+        // when
+        TotpGenerationResult key = totpAuthenticator.generateTotpKey(player);
+
+        // then
+        assertThat(key.getTotpKey(), stringWithLength(32));
+        assertThat(key.getAuthenticatorQrCodeUrl(), containsString(URLEncoder.encode(
+            "otpauth://totp/UT-Rebirth:Bobby?secret=" + key.getTotpKey() + "&issuer=UT-Rebirth&",
+            StandardCharsets.UTF_8)));
+    }
+
     @Test
     void shouldCheckCodeAndDeclareItValidOnlyOnce() {
         // given