diff --git a/mozilla/build/mac/build_scripts/MozillaBuildFlags.txt b/mozilla/build/mac/build_scripts/MozillaBuildFlags.txt
index 0e5b82e25b0..49b7442f714 100644
--- a/mozilla/build/mac/build_scripts/MozillaBuildFlags.txt
+++ b/mozilla/build/mac/build_scripts/MozillaBuildFlags.txt
@@ -43,6 +43,9 @@ use_jars        1
 transformiix    1
 mathml          0      MOZ_MATHML
 svg             0      MOZ_SVG
+# svg requires libart, which is an lgpl library. You need to pull it 
+# explicitly.
+libart_lgpl     0
 mng             1
 ldap            1      MOZ_LDAP_XPCOM
 ldap_experimental 0    MOZ_LDAP_XPCOM_EXPERIMENTAL
diff --git a/mozilla/build/mac/build_scripts/MozillaCheckoutList.txt b/mozilla/build/mac/build_scripts/MozillaCheckoutList.txt
index 107f33f8370..c935e3324fd 100644
--- a/mozilla/build/mac/build_scripts/MozillaCheckoutList.txt
+++ b/mozilla/build/mac/build_scripts/MozillaCheckoutList.txt
@@ -16,3 +16,6 @@ mozilla/lib/mac/Instrumentation
 mozilla/gfx2
 mozilla/modules/libpr0n
 SeaMonkeyAll
+## You need this if you want to be able to use SVG
+## Note that this library is under the LGPL, not the MPL
+#mozilla/other-licenses/libart_lgpl