diff --git a/samples/build_system.dcfg b/samples/build_system.dcfg
index 68b981f..2216fd0 100644
--- a/samples/build_system.dcfg
+++ b/samples/build_system.dcfg
@@ -2,17 +2,17 @@ fn lib = {
 	targets = [
 		{
 			name = 'kernel'
-			source = 'src/kernel'
-			output = 'bin/kernel.elf'
+			source = ./src/kernel
+			output = ./bin/kernel.elf
 			options = {
-				optimization = 'O2'
+				optimization_level = 2
 				debug = false
 			}
 		}
 		{
 			name = 'initrd'
-			source = 'src/initrd'
-			output = 'bin/initrd.img'
+			source = ./src/initrd
+			output = ./bin/initrd.img
 		}
 	]