diff --git a/src/landscape.cpp b/src/landscape.cpp
--- a/src/landscape.cpp
+++ b/src/landscape.cpp
@@ -221,7 +221,7 @@ uint ApplyFoundationToSlope(Foundation f
  * @param corners slope to examine
  * @return height of given point of given slope
  */
-static constexpr uint InternalGetPartialPixelZ(int x, int y, Slope corners)
+uint GetPartialPixelZ(int x, int y, Slope corners)
 {
 	if (IsHalftileSlope(corners)) {
 		/* A foundation is placed on half the tile at a specific corner. This means that,
@@ -285,21 +285,6 @@ static constexpr uint InternalGetPartial
 	}
 }
 
-#include "tests/landscape_partial_pixel_z.h"
-
-/**
- * Determines height at given coordinate of a slope.
- * See #InternalGetPartialPixelZ.
- * @param x x coordinate (value from 0 to 15)
- * @param y y coordinate (value from 0 to 15)
- * @param corners slope to examine
- * @return height of given point of given slope
- */
-uint GetPartialPixelZ(int x, int y, Slope corners)
-{
-	return InternalGetPartialPixelZ(x, y, corners);
-}
-
 /**
  * Return world \c Z coordinate of a given point of a tile. Normally this is the
  * Z of the ground/foundation at the given location, but in some cases the