diff --git a/src/animations/piesliceanimation.cpp b/src/animations/piesliceanimation.cpp
index c1f2412..e05f73b 100644
--- a/src/animations/piesliceanimation.cpp
+++ b/src/animations/piesliceanimation.cpp
@@ -22,7 +22,7 @@
 #include "piechartitem_p.h"
 #include "qpieslice.h"
 
-Q_DECLARE_METATYPE(QtCommercialChart::PieSliceData)
+Q_DECLARE_METATYPE(QTCOMMERCIALCHART_NAMESPACE::PieSliceData)
 
 QTCOMMERCIALCHART_BEGIN_NAMESPACE