diff --git a/eclipse/lang/.project b/eclipse/lang/.project
index 24505b8..55ea4c8 100644
--- a/eclipse/lang/.project
+++ b/eclipse/lang/.project
@@ -1,29 +1,35 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<projectDescription>
-	<name>gwt-lang</name>
-	<comment></comment>
-	<projects>
-	</projects>
-	<buildSpec>
-		<buildCommand>
-			<name>org.eclipse.jdt.core.javabuilder</name>
-			<arguments>
-			</arguments>
-		</buildCommand>
-	</buildSpec>
-	<natures>
-		<nature>org.eclipse.jdt.core.javanature</nature>
-	</natures>
-	<linkedResources>
-		<link>
-			<name>user</name>
-			<type>2</type>
-			<location>GWT_ROOT/user</location>
-		</link>
-		<link>
-			<name>dev</name>
-			<type>2</type>
-			<location>GWT_ROOT/dev/core</location>
-		</link>
-	</linkedResources>
-</projectDescription>
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>gwt-lang</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>com.atlassw.tools.eclipse.checkstyle.CheckstyleBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+		<nature>com.atlassw.tools.eclipse.checkstyle.CheckstyleNature</nature>
+	</natures>
+	<linkedResources>
+		<link>
+			<name>user</name>
+			<type>2</type>
+			<location>GWT_ROOT/user</location>
+		</link>
+		<link>
+			<name>dev</name>
+			<type>2</type>
+			<location>GWT_ROOT/dev/core</location>
+		</link>
+	</linkedResources>
+</projectDescription>