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-rw-r--r--src/sp-mask.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/sp-mask.cpp b/src/sp-mask.cpp
index e777ee154..8c7fbe53e 100644
--- a/src/sp-mask.cpp
+++ b/src/sp-mask.cpp
@@ -55,6 +55,7 @@ static void
sp_mask_init (SPMask *mask)
{
mask->cmask = new CMask(mask);
+ mask->typeHierarchy.insert(typeid(SPMask));
delete mask->cobjectgroup;
mask->cobjectgroup = mask->cmask;