diff --git a/core/.classpath b/core/.classpath
index fb297f54e..b8036faf1 100644
--- a/core/.classpath
+++ b/core/.classpath
@@ -3,6 +3,7 @@
 	<classpathentry excluding="net/sf/openrocket/android/" kind="src" path="src"/>
 	<classpathentry kind="src" path="src-extra"/>
 	<classpathentry kind="src" path="test"/>
+	<classpathentry kind="src" path="3d-Test-Junk"/>
 	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER">
 		<accessrules>
 			<accessrule kind="nonaccessible" pattern="com/sun/**"/>