diff --git a/platform/windows/detect.py b/platform/windows/detect.py
index 9cdf04797c2..298fa3bc789 100644
--- a/platform/windows/detect.py
+++ b/platform/windows/detect.py
@@ -204,7 +204,7 @@ def configure(env):
 
 		elif (env["target"]=="debug"):
 
-			env.Append(CCFLAGS=['/Zi','/DDEBUG_ENABLED','/DDEBUG_MEMORY_ENABLED','/DD3D_DEBUG_INFO','/O1'])
+			env.Append(CCFLAGS=['/Zi','/DDEBUG_ENABLED','/DDEBUG_MEMORY_ENABLED','/DD3D_DEBUG_INFO','/Od'])
 			env.Append(LINKFLAGS=['/SUBSYSTEM:CONSOLE'])
 			env.Append(LINKFLAGS=['/DEBUG'])