diff --git a/uppsrc/ide/Builders/Build.cpp b/uppsrc/ide/Builders/Build.cpp
index f2e4a20d5..19a157542 100644
--- a/uppsrc/ide/Builders/Build.cpp
+++ b/uppsrc/ide/Builders/Build.cpp
@@ -393,9 +393,10 @@ bool MakeBuild::Build(const Workspace& wspc, String mainparam, String outfile, b
 			One<Builder> b = CreateBuilder(~host);
 			if(b) {
 				Index<String> mcfg = PackageConfig(wspc, 0, bm, mainparam, *host, *b, NULL);
-				String outdir = OutDir(mcfg, wspc[0], bm, use_target);
-				SaveFile(AppendFileName(outdir, "main.conf.h"),
-			             main_conf);
+				String outdir = OutDir(mcfg, wspc[0], bm, false);
+				String path = AppendFileName(outdir, "main.conf.h");
+				RealizePath(path);
+				SaveChangedFile(path, main_conf);
 				add_includes << outdir << ';';
 			}
 		}
diff --git a/uppsrc/ide/Core/Core.cpp b/uppsrc/ide/Core/Core.cpp
index a24d5b6a9..2e9096722 100644
--- a/uppsrc/ide/Core/Core.cpp
+++ b/uppsrc/ide/Core/Core.cpp
@@ -271,7 +271,7 @@ String IdeGetLine(int i)
 
 bool SaveChangedFile(const char *path, String data, bool delete_empty)
 {
-	if(LoadFile(path) == data)
+	if(LoadFile(path) == data && (FileExists(path) || delete_empty))
 		return true;
 	if(delete_empty && IsNull(data))
 		return FileDelete(path);