diff --git a/src/main/java/net/minestom/server/extensions/ExtensionManager.java b/src/main/java/net/minestom/server/extensions/ExtensionManager.java
index 9bb396eeb..c3ba92a9f 100644
--- a/src/main/java/net/minestom/server/extensions/ExtensionManager.java
+++ b/src/main/java/net/minestom/server/extensions/ExtensionManager.java
@@ -279,7 +279,7 @@ public class ExtensionManager {
         try {
             jarClass = Class.forName(mainClass, true, loader);
         } catch (ClassNotFoundException e) {
-            LOGGER.error("Could not find main class '{}' in extension '{}'. If it is, be sure to run your server using Bootstrap#bootstrap",
+            LOGGER.error("Could not find main class '{}' in extension '{}'.",
                     mainClass, extensionName, e);
             return null;
         }
diff --git a/src/main/resources/META-INF/services/org.spongepowered.asm.service.IGlobalPropertyService b/src/main/resources/META-INF/services/org.spongepowered.asm.service.IGlobalPropertyService
deleted file mode 100644
index 74a63c27d..000000000
--- a/src/main/resources/META-INF/services/org.spongepowered.asm.service.IGlobalPropertyService
+++ /dev/null
@@ -1 +0,0 @@
-net.minestom.server.extras.selfmodification.mixins.GlobalPropertyServiceMinestom
\ No newline at end of file
diff --git a/src/main/resources/META-INF/services/org.spongepowered.asm.service.IMixinService b/src/main/resources/META-INF/services/org.spongepowered.asm.service.IMixinService
deleted file mode 100644
index 113a8c7ca..000000000
--- a/src/main/resources/META-INF/services/org.spongepowered.asm.service.IMixinService
+++ /dev/null
@@ -1 +0,0 @@
-net.minestom.server.extras.selfmodification.mixins.MixinServiceMinestom
\ No newline at end of file
diff --git a/src/main/resources/META-INF/services/org.spongepowered.asm.service.IMixinServiceBootstrap b/src/main/resources/META-INF/services/org.spongepowered.asm.service.IMixinServiceBootstrap
deleted file mode 100644
index d357615c7..000000000
--- a/src/main/resources/META-INF/services/org.spongepowered.asm.service.IMixinServiceBootstrap
+++ /dev/null
@@ -1 +0,0 @@
-net.minestom.server.extras.selfmodification.mixins.MixinServiceMinestomBootstrap
\ No newline at end of file