diff --git a/eco-core/core-plugin/src/main/java/com/willfp/ecoskills/gui/SkillGUI.java b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecoskills/gui/SkillGUI.kt
similarity index 100%
rename from eco-core/core-plugin/src/main/java/com/willfp/ecoskills/gui/SkillGUI.java
rename to eco-core/core-plugin/src/main/kotlin/com/willfp/ecoskills/gui/SkillGUI.kt