diff --git a/src/openrct2/paint/Paint.cpp b/src/openrct2/paint/Paint.cpp
index c876c578c4..d761c44876 100644
--- a/src/openrct2/paint/Paint.cpp
+++ b/src/openrct2/paint/Paint.cpp
@@ -399,7 +399,7 @@ static paint_struct* paint_arrange_structs_helper_rotation(paint_struct* ps_next
     }
 }
 
-paint_struct* paint_arrange_structs_helper(paint_struct* ps_next, uint16_t quadrantIndex, uint8_t flag, uint8_t rotation)
+static paint_struct* paint_arrange_structs_helper(paint_struct* ps_next, uint16_t quadrantIndex, uint8_t flag, uint8_t rotation)
 {
     switch (rotation)
     {
diff --git a/src/openrct2/paint/Paint.h b/src/openrct2/paint/Paint.h
index d71c84a8f1..999e2f7701 100644
--- a/src/openrct2/paint/Paint.h
+++ b/src/openrct2/paint/Paint.h
@@ -228,7 +228,6 @@ paint_session* paint_session_alloc(rct_drawpixelinfo* dpi, uint32_t viewFlags);
 void paint_session_free(paint_session* session);
 void paint_session_generate(paint_session* session);
 void paint_session_arrange(paint_session* session);
-paint_struct* paint_arrange_structs_helper(paint_struct* ps_next, uint16_t quadrantIndex, uint8_t flag, uint8_t rotation);
 void paint_draw_structs(paint_session* session);
 void paint_draw_money_structs(rct_drawpixelinfo* dpi, paint_string_struct* ps);