diff --git a/doomsday/sdk/libcore/include/de/Slope b/doomsday/sdk/libcore/include/de/Slope
new file mode 100644
index 0000000000..4514174590
--- /dev/null
+++ b/doomsday/sdk/libcore/include/de/Slope
@@ -0,0 +1 @@
+#include "core/slope.h"