1 files changed, 1 insertions, 0 deletions
diff --git a/camel/camel-types.h b/camel/camel-types.h
index f2928bb9f8..8480d9f024 100644
--- a/camel/camel-types.h
+++ b/camel/camel-types.h
@@ -34,6 +34,7 @@ typedef struct _CamelDiscoFolder CamelDiscoFolder;
 typedef struct _CamelDiscoStore CamelDiscoStore;
 typedef struct _CamelDataWrapper CamelDataWrapper;
 typedef struct _CamelException CamelException;
+typedef struct _CamelFilterDriver CamelFilterDriver;
 typedef struct _CamelFolder CamelFolder;
 typedef struct _CamelFolderSearch CamelFolderSearch;
 typedef struct _CamelFolderSummary CamelFolderSummary;