diff --git a/src/error_gui.cpp b/src/error_gui.cpp
index 2635742c9e..de24be3dda 100644
--- a/src/error_gui.cpp
+++ b/src/error_gui.cpp
@@ -224,7 +224,7 @@ public:
 		int scr_top = GetMainViewTop() + 20;
 		int scr_bot = GetMainViewBottom() - 20;
 
-		Point pt = RemapCoords2(this->position.x, this->position.y);
+		Point pt = RemapCoords(this->position.x, this->position.y, GetSlopePixelZOutsideMap(this->position.x, this->position.y));
 		const ViewPort *vp = FindWindowById(WC_MAIN_WINDOW, 0)->viewport;
 		if (this->face == INVALID_COMPANY) {
 			/* move x pos to opposite corner */