diff --git a/basegfx/inc/basegfx/polygon/b2dtrapezoid.hxx b/basegfx/inc/basegfx/polygon/b2dtrapezoid.hxx
index f484f3807759..70ffdf2b7339 100644
--- a/basegfx/inc/basegfx/polygon/b2dtrapezoid.hxx
+++ b/basegfx/inc/basegfx/polygon/b2dtrapezoid.hxx
@@ -32,7 +32,7 @@
 #define _BGFX_POLYGON_B2DTRAPEZOID_HXX
 
 #include <basegfx/polygon/b2dpolygon.hxx>
-#include <basegfx/polygon/b2dPolypolygon.hxx>
+#include <basegfx/polygon/b2dpolypolygon.hxx>
 #include <vector>
 
 //////////////////////////////////////////////////////////////////////////////