diff --git a/plugins/de.cau.cs.kieler.spviz.spvizmodel.ide/build.properties b/plugins/de.cau.cs.kieler.spviz.spvizmodel.ide/build.properties
index b33c185..5c6bbf9 100644
--- a/plugins/de.cau.cs.kieler.spviz.spvizmodel.ide/build.properties
+++ b/plugins/de.cau.cs.kieler.spviz.spvizmodel.ide/build.properties
@@ -1,5 +1,6 @@
 source.. = src/,\
-           src-gen/
+           src-gen/,\
+           xtend-gen/
 bin.includes = .,\
                META-INF/
 bin.excludes = **/*.xtend
diff --git a/plugins/de.cau.cs.kieler.spviz.spvizmodel.ui/build.properties b/plugins/de.cau.cs.kieler.spviz.spvizmodel.ui/build.properties
index aa16ff8..323f56c 100644
--- a/plugins/de.cau.cs.kieler.spviz.spvizmodel.ui/build.properties
+++ b/plugins/de.cau.cs.kieler.spviz.spvizmodel.ui/build.properties
@@ -1,5 +1,6 @@
 source.. = src/,\
-           src-gen/
+           src-gen/,\
+           xtend-gen/
 bin.includes = .,\
                META-INF/,\
                plugin.xml