diff --git a/pom.xml b/pom.xml
index 1afc821..89679bb 100644
--- a/pom.xml
+++ b/pom.xml
@@ -54,9 +54,9 @@
     <resources>
       <resource>
         <directory>${project.build.sourceDirectory}</directory>
-      </resource>
-      <resource>
-        <directory>${basedir}/src/main/resources</directory>
+        <excludes>
+          <exclude>pythagoras/util/Platform.java</exclude>
+        </excludes>
       </resource>
     </resources>
     <plugins>
@@ -72,6 +72,9 @@
           <showWarnings>true</showWarnings>
           <!-- yes, this is apparently the Right Way to do this -->
           <compilerArgument>-Xlint" "-Xlint:-serial" "-Xlint:-path</compilerArgument>
+          <excludes>
+            <exclude>pythagoras/gwt/**</exclude>
+          </excludes>
         </configuration>
       </plugin>
       <plugin>
diff --git a/src/main/java/pythagoras/Pythagoras.gwt.xml b/src/main/java/pythagoras/Pythagoras.gwt.xml
index 398ee65..eb71932 100644
--- a/src/main/java/pythagoras/Pythagoras.gwt.xml
+++ b/src/main/java/pythagoras/Pythagoras.gwt.xml
@@ -4,4 +4,5 @@
   <source path="d"/>
   <source path="i"/>
   <source path="util"/>
+  <super-source path="gwt"/>
 </module>
diff --git a/src/main/resources/pythagoras/util/Platform.java b/src/main/java/pythagoras/gwt/pythagoras/util/Platform.java
similarity index 100%
rename from src/main/resources/pythagoras/util/Platform.java
rename to src/main/java/pythagoras/gwt/pythagoras/util/Platform.java