diff --git a/browser/confvars.sh b/browser/confvars.sh
index 3f8858abec9..b8e64d4c7f0 100755
--- a/browser/confvars.sh
+++ b/browser/confvars.sh
@@ -12,10 +12,17 @@ if test "$OS_ARCH" = "WINNT"; then
   if ! test "$HAVE_64BIT_OS"; then
     MOZ_VERIFY_MAR_SIGNATURE=1
     MOZ_MAINTENANCE_SERVICE=1
+    if test "$MOZ_UPDATE_CHANNEL" = "nightly" -o \
+            "$MOZ_UPDATE_CHANNEL" = "aurora" -o \
+            "$MOZ_UPDATE_CHANNEL" = "beta" -o \
+            "$MOZ_UPDATE_CHANNEL" = "release"; then
+      if ! test "$MOZ_DEBUG"; then
+        MOZ_STUB_INSTALLER=1
+      fi
+    fi
   fi
 fi
 
-MOZ_STUB_INSTALLER=1
 MOZ_CHROME_FILE_FORMAT=omni
 MOZ_SAFE_BROWSING=1
 MOZ_SERVICES_AITC=1
diff --git a/browser/locales/Makefile.in b/browser/locales/Makefile.in
index 4912b0ce579..7bbc780c3e9 100644
--- a/browser/locales/Makefile.in
+++ b/browser/locales/Makefile.in
@@ -67,7 +67,9 @@ UNINSTALLER_PACKAGE_HOOK = $(RM) -r $(STAGEDIST)/uninstall; \
     cp ../installer/windows/l10ngen/helper.exe $(STAGEDIST)/uninstall; \
     $(RM) $(_ABS_DIST)/l10n-stage/setup.exe; \
     cp ../installer/windows/l10ngen/setup.exe $(_ABS_DIST)/l10n-stage; \
-    $(NSINSTALL) -D "$(_ABS_DIST)/$(PKG_INST_PATH)"; \
+    $(NULL)
+
+STUB_HOOK = $(NSINSTALL) -D "$(_ABS_DIST)/$(PKG_INST_PATH)"; \
     $(RM) "$(_ABS_DIST)/$(PKG_INST_PATH)$(PKG_STUB_BASENAME).exe"; \
     cp ../installer/windows/l10ngen/stub.exe "$(_ABS_DIST)/$(PKG_INST_PATH)$(PKG_STUB_BASENAME).exe"; \
     chmod 0755 "$(_ABS_DIST)/$(PKG_INST_PATH)$(PKG_STUB_BASENAME).exe"; \
diff --git a/configure.in b/configure.in
index 3d4af2cad21..4e2b2c54da5 100644
--- a/configure.in
+++ b/configure.in
@@ -4374,6 +4374,19 @@ else
   fi
 fi
 
+# The app update channel is 'default' when not supplied. The value is used in
+# the application's confvars.sh so it must be set before confvars.sh is called.
+MOZ_ARG_ENABLE_STRING([update-channel],
+[  --enable-update-channel=CHANNEL
+                          Select application update channel (default=default)],
+    MOZ_UPDATE_CHANNEL=`echo $enableval | tr A-Z a-z`)
+
+if test -z "$MOZ_UPDATE_CHANNEL"; then
+    MOZ_UPDATE_CHANNEL=default
+fi
+AC_DEFINE_UNQUOTED(MOZ_UPDATE_CHANNEL, $MOZ_UPDATE_CHANNEL)
+AC_SUBST(MOZ_UPDATE_CHANNEL)
+
 # Allow the application to influence configure with a confvars.sh script.
 
 AC_MSG_CHECKING([if app-specific confvars.sh exists])
@@ -6321,18 +6334,6 @@ if test -n "$MOZ_UPDATER"; then
     AC_DEFINE(MOZ_UPDATER)
 fi
 
-# app update channel is 'default' when not supplied.
-MOZ_ARG_ENABLE_STRING([update-channel],
-[  --enable-update-channel=CHANNEL
-                          Select application update channel (default=default)],
-    MOZ_UPDATE_CHANNEL=`echo $enableval | tr A-Z a-z`)
-
-if test -z "$MOZ_UPDATE_CHANNEL"; then
-    MOZ_UPDATE_CHANNEL=default
-fi
-AC_DEFINE_UNQUOTED(MOZ_UPDATE_CHANNEL, $MOZ_UPDATE_CHANNEL)
-AC_SUBST(MOZ_UPDATE_CHANNEL)
-
 # tools/update-packaging is not checked out by default.
 MOZ_ARG_ENABLE_BOOL(update-packaging,
 [  --enable-update-packaging
diff --git a/toolkit/locales/l10n.mk b/toolkit/locales/l10n.mk
index a3c08542407..2650a9c71c6 100644
--- a/toolkit/locales/l10n.mk
+++ b/toolkit/locales/l10n.mk
@@ -113,6 +113,10 @@ repackage-zip:  libs-$(AB_CD)
 	-$(PERL) -pi.old -e "s/en-US/$(AB_CD)/g" $(JARLOG_DIR_AB_CD)/*.jar.log
 # call a hook for apps to put their uninstall helper.exe into the package
 	$(UNINSTALLER_PACKAGE_HOOK)
+# call a hook for apps to build the stub installer
+ifdef MOZ_STUB_INSTALLER
+	$(STUB_HOOK)
+endif
 # copy xpi-stage over, but not install.rdf and chrome.manifest,
 # those are just for language packs
 	cd $(DIST)/xpi-stage/locale-$(AB_CD) && \