diff --git a/buildspec.mk.default b/buildspec.mk.default
index 861bb0d..6fd93da 100644
--- a/buildspec.mk.default
+++ b/buildspec.mk.default
@@ -88,10 +88,16 @@
 #NO_FALLBACK_FONT:=true
 endif
 
-# To enabled instrumentation in webcore based apps like gmail and
+# To enable instrumentation in webcore based apps like gmail and
 # the browser, define WEBCORE_INSTRUMENTATION:=true
+ifndef WEBCORE_INSTRUMENTATION
 #WEBCORE_INSTRUMENTATION:=true
-#endif
+endif
+
+# To enable SVG in webcore define ENABLE_SVG:=true
+ifndef ENABLE_SVG
+#ENABLE_SVG:=true
+endif
 
 # when the build system changes such that this file must be updated, this
 # variable will be changed.  After you have modified this file with the new