diff --git a/w32/vsnet/Tools/apr/apr.vcproj b/w32/vsnet/Tools/apr/apr.vcproj
index c8638f8a36..7a78d1ef35 100644
--- a/w32/vsnet/Tools/apr/apr.vcproj
+++ b/w32/vsnet/Tools/apr/apr.vcproj
@@ -40,7 +40,7 @@
 			/>
 			<Tool
 				Name="VCCLCompilerTool"
-				Optimization="2"
+				Optimization="0"
 				InlineFunctionExpansion="1"
 				AdditionalIncludeDirectories="./include,./include/arch,./include/arch/win32,./include/arch/unix"
 				PreprocessorDefinitions="_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_DEPRECATE;APR_DECLARE_EXPORT;WIN32;_WINDOWS;NDEBUG"