diff --git a/src/script/api/script_infrastructure.cpp b/src/script/api/script_infrastructure.cpp
index 5ef5470c53..0a9de4f34e 100644
--- a/src/script/api/script_infrastructure.cpp
+++ b/src/script/api/script_infrastructure.cpp
@@ -18,7 +18,7 @@
 #include "../../safeguards.h"
 
 
-/* static */ uint32 ScriptInfrastructure::GetRailPieceCount(ScriptCompany::CompanyID company, ScriptRail::RailType railtype)
+/* static */ SQInteger ScriptInfrastructure::GetRailPieceCount(ScriptCompany::CompanyID company, ScriptRail::RailType railtype)
 {
 	company = ScriptCompany::ResolveCompanyID(company);
 	if (company == ScriptCompany::COMPANY_INVALID || (::RailType)railtype >= RAILTYPE_END) return 0;
@@ -26,7 +26,7 @@
 	return ::Company::Get((::CompanyID)company)->infrastructure.rail[railtype];
 }
 
-/* static */ uint32 ScriptInfrastructure::GetRoadPieceCount(ScriptCompany::CompanyID company, ScriptRoad::RoadType roadtype)
+/* static */ SQInteger ScriptInfrastructure::GetRoadPieceCount(ScriptCompany::CompanyID company, ScriptRoad::RoadType roadtype)
 {
 	company = ScriptCompany::ResolveCompanyID(company);
 	if (company == ScriptCompany::COMPANY_INVALID || (::RoadType)roadtype >= ROADTYPE_END) return 0;
@@ -34,7 +34,7 @@
 	return ::Company::Get((::CompanyID)company)->infrastructure.road[roadtype];
 }
 
-/* static */ uint32 ScriptInfrastructure::GetInfrastructurePieceCount(ScriptCompany::CompanyID company, Infrastructure infra_type)
+/* static */ SQInteger ScriptInfrastructure::GetInfrastructurePieceCount(ScriptCompany::CompanyID company, Infrastructure infra_type)
 {
 	company = ScriptCompany::ResolveCompanyID(company);
 	if (company == ScriptCompany::COMPANY_INVALID) return 0;
diff --git a/src/script/api/script_infrastructure.hpp b/src/script/api/script_infrastructure.hpp
index 8f2d283137..9b3a499b7d 100644
--- a/src/script/api/script_infrastructure.hpp
+++ b/src/script/api/script_infrastructure.hpp
@@ -35,7 +35,7 @@ public:
 	 * @param railtype Rail type to get the count of.
 	 * @return Count for the rail type.
 	 */
-	static uint32 GetRailPieceCount(ScriptCompany::CompanyID company, ScriptRail::RailType railtype);
+	static SQInteger GetRailPieceCount(ScriptCompany::CompanyID company, ScriptRail::RailType railtype);
 
 	/**
 	 * Return the number of road pieces of a specific road type for a company.
@@ -43,7 +43,7 @@ public:
 	 * @param roadtype Road type to get the count of.
 	 * @return Count for the road type.
 	 */
-	static uint32 GetRoadPieceCount(ScriptCompany::CompanyID company, ScriptRoad::RoadType roadtype);
+	static SQInteger GetRoadPieceCount(ScriptCompany::CompanyID company, ScriptRoad::RoadType roadtype);
 
 	/**
 	 * Return the number of pieces of an infrastructure category for a company.
@@ -52,7 +52,7 @@ public:
 	 * @return Count for the wanted category.
 	 * @note #INFRASTRUCTURE_RAIL and #INFRASTRUCTURE_ROAD return the total count for all rail/road types.
 	 */
-	static uint32 GetInfrastructurePieceCount(ScriptCompany::CompanyID company, Infrastructure infra_type);
+	static SQInteger GetInfrastructurePieceCount(ScriptCompany::CompanyID company, Infrastructure infra_type);
 
 	/**
 	 * Return the monthly maintenance costs of a specific rail type for a company.