diff --git a/src/landscape/C4Scenario.cpp b/src/landscape/C4Scenario.cpp
index 63a3b1a30..84f64fa7e 100644
--- a/src/landscape/C4Scenario.cpp
+++ b/src/landscape/C4Scenario.cpp
@@ -285,7 +285,7 @@ void C4SLandscape::Default()
 {
 	BottomOpen=0; TopOpen=1;
 	LeftOpen=0; RightOpen=0;
-	AutoScanSideOpen=true;
+	AutoScanSideOpen=1;
 	SkyDef[0]=0;
 	for (int & cnt : SkyDefFade) cnt=0;
 	VegLevel.Set(50,30,0,100);
@@ -336,7 +336,7 @@ void C4SLandscape::CompileFunc(StdCompiler *pComp)
 	pComp->Value(mkNamingAdapt(TopOpen,                 "TopOpen",               1));
 	pComp->Value(mkNamingAdapt(LeftOpen,                "LeftOpen",              0));
 	pComp->Value(mkNamingAdapt(RightOpen,               "RightOpen",             0));
-	pComp->Value(mkNamingAdapt(AutoScanSideOpen,        "AutoScanSideOpen",      true));
+	pComp->Value(mkNamingAdapt(AutoScanSideOpen,        "AutoScanSideOpen",      1));
 	pComp->Value(mkNamingAdapt(MapWdt,                  "MapWidth",              C4SVal(100,0,64,250), true));
 	pComp->Value(mkNamingAdapt(MapHgt,                  "MapHeight",             C4SVal(50,0,40,250), true));
 	pComp->Value(mkNamingAdapt(MapZoom,                 "MapZoom",               C4SVal(8,0,1,15), true));
diff --git a/src/landscape/C4Scenario.h b/src/landscape/C4Scenario.h
index d210c692e..9a4ab4866 100644
--- a/src/landscape/C4Scenario.h
+++ b/src/landscape/C4Scenario.h
@@ -167,7 +167,7 @@ public:
 	C4IDList InEarth;
 	int32_t BottomOpen,TopOpen;
 	int32_t LeftOpen,RightOpen;
-	bool AutoScanSideOpen;
+	int32_t AutoScanSideOpen;
 	std::string SkyDef;
 	int32_t SkyDefFade[6];
 	bool NoScan;