diff --git a/mozilla/allmakefiles.sh b/mozilla/allmakefiles.sh
index d840d6a2345..ec8659f7ff1 100755
--- a/mozilla/allmakefiles.sh
+++ b/mozilla/allmakefiles.sh
@@ -1208,6 +1208,13 @@ for extension in $MOZ_EXTENSIONS; do
             extensions/pref/autoconfig/src/Makefile
             extensions/pref/autoconfig/resources/Makefile
             " ;;
+        spellcheck ) MAKEFILES_extensions="$MAKEFILES_extensions
+            extensions/spellcheck/Makefile
+            extensions/spellcheck/idl/Makefile
+            extensions/spellcheck/myspell/Makefile
+            extensions/spellcheck/myspell/dictionaries/Makefile
+            extensions/spellcheck/src/Makefile
+            " ;;
         transformiix ) MAKEFILES_extensions="$MAKEFILES_extensions
             $MAKEFILES_transformiix"
             ;;
diff --git a/mozilla/configure.in b/mozilla/configure.in
index d075e9e41fb..f187b3e4588 100644
--- a/mozilla/configure.in
+++ b/mozilla/configure.in
@@ -3536,7 +3536,7 @@ dnl ========================================================
 
 MOZ_EXTENSIONS_DEFAULT=" cookie wallet content-packs xml-rpc xmlextras help p3p pref transformiix venkman inspector irc universalchardet typeaheadfind webservices"
 
-MOZ_EXTENSIONS_ALL="$MOZ_EXTENSIONS_DEFAULT xmlterm datetime finger cview layout-debug"
+MOZ_EXTENSIONS_ALL="$MOZ_EXTENSIONS_DEFAULT xmlterm datetime finger cview layout-debug spellcheck"
 
 MOZ_ARG_ENABLE_STRING(extensions,
 [  --enable-extensions     Enable extensions],