diff --git a/mozilla/config/rules.mk b/mozilla/config/rules.mk
index a19bc550dce..2d7517bc8bf 100644
--- a/mozilla/config/rules.mk
+++ b/mozilla/config/rules.mk
@@ -408,6 +408,20 @@ ifdef IS_COMPONENT
 EXTRA_DSO_LDOPTS += $(MOZ_COMPONENTS_VERSION_SCRIPT_LDFLAGS)
 endif # IS_COMPONENT
 
+#
+# Enforce the requirement that MODULE_NAME must be set 
+# for components in static builds
+#
+ifdef IS_COMPONENT
+ifdef EXPORT_LIBRARY
+ifndef FORCE_SHARED_LIB
+ifndef MODULE_NAME
+$(error MODULE_NAME is required for components which may be used in static builds)
+endif
+endif
+endif
+endif
+
 #
 # MacOS X specific stuff
 #