diff --git a/Source/Core/DebuggerWX/DebuggerWX.vcproj b/Source/Core/DebuggerWX/DebuggerWX.vcproj
index 13216d8584..88b49ed796 100644
--- a/Source/Core/DebuggerWX/DebuggerWX.vcproj
+++ b/Source/Core/DebuggerWX/DebuggerWX.vcproj
@@ -310,7 +310,7 @@
 				Optimization="0"
 				WholeProgramOptimization="false"
 				AdditionalIncludeDirectories="..\..\PluginSpecs;..\..\..\Externals\wxWidgets\Include;..\..\..\Externals\wxWidgets\Include\msvc;..\Core\Src;..\Common\Src;..\..\..\Externals\Bochs_disasm"
-				PreprocessorDefinitions="WIN32;__WXMSW__;_WINDOWS;NOPCH;_SECURE_SCL=0;_CRT_SECURE_NO_WARNINGS"
+				PreprocessorDefinitions="WIN32;__WXMSW__;_WINDOWS;NOPCH;_SECURE_SCL=0;_CRT_SECURE_NO_WARNINGS;DEBUGFAST"
 				MinimalRebuild="true"
 				BasicRuntimeChecks="0"
 				RuntimeLibrary="0"
@@ -379,7 +379,7 @@
 				Optimization="0"
 				WholeProgramOptimization="false"
 				AdditionalIncludeDirectories="..\..\PluginSpecs;..\..\..\Externals\wxWidgets\Include;..\..\..\Externals\wxWidgets\Include\msvc;..\Core\Src;..\Common\Src;..\..\..\Externals\Bochs_disasm"
-				PreprocessorDefinitions="WIN32;__WXMSW__;_WINDOWS;NOPCH;_SECURE_SCL=0;_CRT_SECURE_NO_WARNINGS"
+				PreprocessorDefinitions="WIN32;__WXMSW__;_WINDOWS;NOPCH;_SECURE_SCL=0;_CRT_SECURE_NO_WARNINGS;DEBUGFAST"
 				MinimalRebuild="true"
 				BasicRuntimeChecks="3"
 				RuntimeLibrary="0"