diff --git a/client.mk b/client.mk
index 6bac72ebc690d838ca27009b66d4a73e8dacbaa1..3fda9ca789766de2c8c3743211cc8038d87b7be5 100644
--- a/client.mk
+++ b/client.mk
@@ -342,6 +342,7 @@ MODULES_NS_macbrowser :=                        \
 MODULES_macbrowser :=                           \
   $(MODULES_core)                               \
   mozilla/camino                                \
+  mozilla/themes                                \
   $(NULL)
 
 BOOTSTRAP_macbrowser :=                         \