diff --git a/src/newgrf_commons.cpp b/src/newgrf_commons.cpp
index 679642ff42..81228866df 100644
--- a/src/newgrf_commons.cpp
+++ b/src/newgrf_commons.cpp
@@ -473,16 +473,16 @@ uint32 GetCompanyInfo(CompanyID owner, const Livery *l)
 /**
  * Get the error message from a shape/location/slope check callback result.
  * @param cb_res Callback result to translate. If bit 10 is set this is a standard error message, otherwise a NewGRF provided string.
- * @param grfid grfID to use to resolve a custom error message.
+ * @param grffile NewGRF to use to resolve a custom error message.
  * @param default_error Error message to use for the generic error.
  * @return CommandCost indicating success or the error message.
  */
-CommandCost GetErrorMessageFromLocationCallbackResult(uint16 cb_res, uint32 grfid, StringID default_error)
+CommandCost GetErrorMessageFromLocationCallbackResult(uint16 cb_res, const GRFFile *grffile, StringID default_error)
 {
 	CommandCost res;
 
 	if (cb_res < 0x400) {
-		res = CommandCost(GetGRFStringID(grfid, 0xD000 + cb_res));
+		res = CommandCost(GetGRFStringID(grffile->grfid, 0xD000 + cb_res));
 	} else {
 		switch (cb_res) {
 			case 0x400: return res; // No error.
diff --git a/src/newgrf_commons.h b/src/newgrf_commons.h
index 3e8434748b..a9cc506591 100644
--- a/src/newgrf_commons.h
+++ b/src/newgrf_commons.h
@@ -22,6 +22,8 @@
 #include "direction_type.h"
 #include "company_type.h"
 
+struct GRFFile;
+
 /** Context for tile accesses */
 enum TileContext {
 	TCX_NORMAL,         ///< Nothing special.
@@ -297,7 +299,7 @@ uint32 GetTerrainType(TileIndex tile, TileContext context = TCX_NORMAL);
 TileIndex GetNearbyTile(byte parameter, TileIndex tile, bool signed_offsets = true, Axis axis = INVALID_AXIS);
 uint32 GetNearbyTileInformation(TileIndex tile, bool grf_version8);
 uint32 GetCompanyInfo(CompanyID owner, const struct Livery *l = NULL);
-CommandCost GetErrorMessageFromLocationCallbackResult(uint16 cb_res, uint32 grfid, StringID default_error);
+CommandCost GetErrorMessageFromLocationCallbackResult(uint16 cb_res, const GRFFile *grffile, StringID default_error);
 
 void ErrorUnknownCallbackResult(uint32 grfid, uint16 cbid, uint16 cb_res);
 bool ConvertBooleanCallback(const struct GRFFile *grffile, uint16 cbid, uint16 cb_res);
diff --git a/src/newgrf_industries.cpp b/src/newgrf_industries.cpp
index ffc677d02b..dfc615b299 100644
--- a/src/newgrf_industries.cpp
+++ b/src/newgrf_industries.cpp
@@ -531,7 +531,7 @@ CommandCost CheckIfCallBackAllowsCreation(TileIndex tile, IndustryType type, uin
 	uint16 result = group->GetCallbackResult();
 	if (result == CALLBACK_FAILED) return CommandCost();
 
-	return GetErrorMessageFromLocationCallbackResult(result, indspec->grf_prop.grffile->grfid, STR_ERROR_SITE_UNSUITABLE);
+	return GetErrorMessageFromLocationCallbackResult(result, indspec->grf_prop.grffile, STR_ERROR_SITE_UNSUITABLE);
 }
 
 /**
diff --git a/src/newgrf_industrytiles.cpp b/src/newgrf_industrytiles.cpp
index 965c55d49a..7e31c1bc45 100644
--- a/src/newgrf_industrytiles.cpp
+++ b/src/newgrf_industrytiles.cpp
@@ -256,7 +256,7 @@ CommandCost PerformIndustryTileSlopeCheck(TileIndex ind_base_tile, TileIndex ind
 		return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
 	}
 
-	return GetErrorMessageFromLocationCallbackResult(callback_res, its->grf_prop.grffile->grfid, STR_ERROR_SITE_UNSUITABLE);
+	return GetErrorMessageFromLocationCallbackResult(callback_res, its->grf_prop.grffile, STR_ERROR_SITE_UNSUITABLE);
 }
 
 /* Simple wrapper for GetHouseCallback to keep the animation unified. */
diff --git a/src/newgrf_station.cpp b/src/newgrf_station.cpp
index 4bfb125d68..9cdded6204 100644
--- a/src/newgrf_station.cpp
+++ b/src/newgrf_station.cpp
@@ -680,7 +680,7 @@ CommandCost PerformStationTileSlopeCheck(TileIndex north_tile, TileIndex cur_til
 
 	/* The meaning of bit 10 is inverted for a grf version < 8. */
 	if (statspec->grf_prop.grffile->grf_version < 8) ToggleBit(cb_res, 10);
-	return GetErrorMessageFromLocationCallbackResult(cb_res, statspec->grf_prop.grffile->grfid, STR_ERROR_LAND_SLOPED_IN_WRONG_DIRECTION);
+	return GetErrorMessageFromLocationCallbackResult(cb_res, statspec->grf_prop.grffile, STR_ERROR_LAND_SLOPED_IN_WRONG_DIRECTION);
 }
 
 
diff --git a/src/object_cmd.cpp b/src/object_cmd.cpp
index 4c3b38bdb0..05efae0a21 100644
--- a/src/object_cmd.cpp
+++ b/src/object_cmd.cpp
@@ -270,7 +270,7 @@ CommandCost CmdBuildObject(TileIndex tile, DoCommandFlag flags, uint32 p1, uint3
 			} else {
 				/* The meaning of bit 10 is inverted for a grf version < 8. */
 				if (spec->grf_prop.grffile->grf_version < 8) ToggleBit(callback, 10);
-				CommandCost ret = GetErrorMessageFromLocationCallbackResult(callback, spec->grf_prop.grffile->grfid, STR_ERROR_LAND_SLOPED_IN_WRONG_DIRECTION);
+				CommandCost ret = GetErrorMessageFromLocationCallbackResult(callback, spec->grf_prop.grffile, STR_ERROR_LAND_SLOPED_IN_WRONG_DIRECTION);
 				if (ret.Failed()) return ret;
 			}
 		}