diff --git a/org.eclipse.nebula.widgets.nattable.core.test/build.properties b/org.eclipse.nebula.widgets.nattable.core.test/build.properties
index 34d2e4d..d8e2f0e 100644
--- a/org.eclipse.nebula.widgets.nattable.core.test/build.properties
+++ b/org.eclipse.nebula.widgets.nattable.core.test/build.properties
@@ -1,4 +1,5 @@
-source.. = src/
+source.. = src/,\
+           xtend-gen/
 output.. = bin/
 bin.includes = META-INF/,\
                .
diff --git a/org.eclipse.nebula.widgets.nattable.core/build.properties b/org.eclipse.nebula.widgets.nattable.core/build.properties
index 34d2e4d..d8e2f0e 100644
--- a/org.eclipse.nebula.widgets.nattable.core/build.properties
+++ b/org.eclipse.nebula.widgets.nattable.core/build.properties
@@ -1,4 +1,5 @@
-source.. = src/
+source.. = src/,\
+           xtend-gen/
 output.. = bin/
 bin.includes = META-INF/,\
                .
diff --git a/org.eclipse.nebula.widgets.nattable.renderer.javafx.test/build.properties b/org.eclipse.nebula.widgets.nattable.renderer.javafx.test/build.properties
index 34d2e4d..d8e2f0e 100644
--- a/org.eclipse.nebula.widgets.nattable.renderer.javafx.test/build.properties
+++ b/org.eclipse.nebula.widgets.nattable.renderer.javafx.test/build.properties
@@ -1,4 +1,5 @@
-source.. = src/
+source.. = src/,\
+           xtend-gen/
 output.. = bin/
 bin.includes = META-INF/,\
                .
diff --git a/org.eclipse.nebula.widgets.nattable.renderer.javafx/build.properties b/org.eclipse.nebula.widgets.nattable.renderer.javafx/build.properties
index 34d2e4d..d8e2f0e 100644
--- a/org.eclipse.nebula.widgets.nattable.renderer.javafx/build.properties
+++ b/org.eclipse.nebula.widgets.nattable.renderer.javafx/build.properties
@@ -1,4 +1,5 @@
-source.. = src/
+source.. = src/,\
+           xtend-gen/
 output.. = bin/
 bin.includes = META-INF/,\
                .
diff --git a/org.eclipse.nebula.widgets.nattable.renderer.swt.test/build.properties b/org.eclipse.nebula.widgets.nattable.renderer.swt.test/build.properties
index 34d2e4d..d8e2f0e 100644
--- a/org.eclipse.nebula.widgets.nattable.renderer.swt.test/build.properties
+++ b/org.eclipse.nebula.widgets.nattable.renderer.swt.test/build.properties
@@ -1,4 +1,5 @@
-source.. = src/
+source.. = src/,\
+           xtend-gen/
 output.. = bin/
 bin.includes = META-INF/,\
                .
diff --git a/org.eclipse.nebula.widgets.nattable.renderer.swt/build.properties b/org.eclipse.nebula.widgets.nattable.renderer.swt/build.properties
index 34d2e4d..d8e2f0e 100644
--- a/org.eclipse.nebula.widgets.nattable.renderer.swt/build.properties
+++ b/org.eclipse.nebula.widgets.nattable.renderer.swt/build.properties
@@ -1,4 +1,5 @@
-source.. = src/
+source.. = src/,\
+           xtend-gen/
 output.. = bin/
 bin.includes = META-INF/,\
                .