1 files changed, 1 insertions, 0 deletions
diff --git a/src/sp-filter.h b/src/sp-filter.h
index 263f9cdd1..ea9717498 100644
--- a/src/sp-filter.h
+++ b/src/sp-filter.h
@@ -45,6 +45,7 @@ class CFilter;
 
 class SPFilter : public SPObject {
 public:
+	SPFilter();
 	CFilter* cfilter;
 
     SPFilterUnits filterUnits;