diff --git a/build.gradle b/build.gradle
index 2b26e04..d62fecf 100644
--- a/build.gradle
+++ b/build.gradle
@@ -47,5 +47,6 @@ processResources {
 
 jar.manifest {
     attributes 'FMLCorePlugin': 'com.tterrag.blurbg.BlurBGPlugin'
+    attributes 'FMLCorePluginContainsFMLMod': 'true'
 }