diff --git a/mail/config/Makefile.in b/mail/config/Makefile.in
index 1f09dba6ecc..4610e559526 100644
--- a/mail/config/Makefile.in
+++ b/mail/config/Makefile.in
@@ -47,7 +47,7 @@ mail_chrome: mail-jar.mn
 
 	$(NSINSTALL) -D $(DIST)/$(APP_NAME)/tmpchrome/toolkit
 	$(UNZIP) -o -d $(DIST)/$(APP_NAME)/tmpchrome/toolkit $(DIST)/bin/chrome/toolkit.jar
-	
+
 	$(NSINSTALL) -D $(DIST)/$(APP_NAME)/tmpchrome/msg
 	$(UNZIP) -o -d $(DIST)/$(APP_NAME)/tmpchrome/msg $(DIST)/bin/chrome/messenger.jar
 
@@ -92,6 +92,7 @@ ifneq (,$(findstring inspector,$(MOZ_EXTENSIONS)))
 endif
 	$(NSINSTALL) -t $(DIST)/bin/$(APP_NAME)$(BIN_SUFFIX) $(DIST)/$(APP_NAME)/
 	$(PERL) $(topsrcdir)/config/preprocessor.pl $(DEFINES) $(ACDEFINES) $(MOZILLA_DIR)/mail/config/installed-chrome.txt > $(DIST)/$(APP_NAME)/chrome/installed-chrome.txt
+	rm $(DIST)/$(APP_NAME)/components/compreg.dat
 
 libs::
 	$(MAKE) mail_chrome