1 files changed, 1 insertions, 1 deletions
diff --git a/src/filter-chemistry.h b/src/filter-chemistry.h
index 751885ad2..b00e33bcc 100644
--- a/src/filter-chemistry.h
+++ b/src/filter-chemistry.h
@@ -20,7 +20,7 @@
 
 class SPDocument;
 struct SPFilter;
-class SPFilterPrimitive;
+struct SPFilterPrimitive;
 class SPItem;
 class SPObject;