diff --git a/rvm/src/org/jikesrvm/tools/header_gen/GenerateInterfaceDeclarations.java b/rvm/src/org/jikesrvm/tools/header_gen/GenerateInterfaceDeclarations.java
index 63f16b7df..b513506d2 100644
--- a/rvm/src/org/jikesrvm/tools/header_gen/GenerateInterfaceDeclarations.java
+++ b/rvm/src/org/jikesrvm/tools/header_gen/GenerateInterfaceDeclarations.java
@@ -295,7 +295,7 @@ static void emitCDeclarationsForJavaType(String Cname, RVMClass cls) {
         p("   unsigned int * " + name + ";\n");
         current = current.plus(addrSize);
       } else if (t.isReferenceType()) {
-        p("   JavaObject_t " + name + ";\n");
+        p("   Address " + name + ";\n");
         current = current.plus(addrSize);
       } else {
         System.err.println("Unexpected field " + name + " with type " + t);