diff --git a/src/SelectionBox.h b/src/SelectionBox.h
index bf7715e32..4da48547c 100644
--- a/src/SelectionBox.h
+++ b/src/SelectionBox.h
@@ -9,6 +9,6 @@ struct IGameComponent;
 extern struct IGameComponent Selections_Component;
 
 void Selections_Render(void);
-void Selections_Add(cc_uint8 id, const IVec3* p1, const IVec3* p2, PackedCol col);
-void Selections_Remove(cc_uint8 id);
+CC_API void Selections_Add(cc_uint8 id, const IVec3* p1, const IVec3* p2, PackedCol col);
+CC_API void Selections_Remove(cc_uint8 id);
 #endif