diff --git a/core/OpenRocket Core.iml b/core/OpenRocket Core.iml
index 1a3d9744c..e1e2c5ccd 100644
--- a/core/OpenRocket Core.iml	
+++ b/core/OpenRocket Core.iml	
@@ -177,5 +177,14 @@
         <SOURCES />
       </library>
     </orderEntry>
+    <orderEntry type="module-library">
+      <library>
+        <CLASSES>
+          <root url="jar://$MODULE_DIR$/lib/logback-classic-1.0.12.jar!/" />
+        </CLASSES>
+        <JAVADOC />
+        <SOURCES />
+      </library>
+    </orderEntry>
   </component>
 </module>
\ No newline at end of file