1 files changed, 1 insertions, 0 deletions
diff --git a/src/css.hh b/src/css.hh
index 017a2fc2..500d5b3f 100644
--- a/src/css.hh
+++ b/src/css.hh
@@ -12,6 +12,7 @@ class CssProperty {
       } Value;
 
       typedef enum {
+         CSS_PROPERTY_END = -1,
          CSS_PROPERTY_BACKGROUND_ATTACHMENT,
          CSS_PROPERTY_BACKGROUND_COLOR,
          CSS_PROPERTY_BACKGROUND_IMAGE,