diff --git a/PCbuild9/debug.vsprops b/PCbuild9/debug.vsprops
new file mode 100644
index 0000000..59acd90
--- /dev/null
+++ b/PCbuild9/debug.vsprops
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="Windows-1252"?>
+<VisualStudioPropertySheet
+	ProjectType="Visual C++"
+	Version="8.00"
+	Name="debug"
+	>
+	<Tool
+		Name="VCCLCompilerTool"
+		PreprocessorDefinitions="_DEBUG"
+	/>
+</VisualStudioPropertySheet>
\ No newline at end of file