diff --git a/SimGear.dsp b/SimGear.dsp
index f1a8a19f..347a2b44 100644
--- a/SimGear.dsp
+++ b/SimGear.dsp
@@ -51,7 +51,7 @@ LINK32=link.exe -lib
 # PROP Output_Dir "Debug"
 # PROP Intermediate_Dir "Debug"
 # PROP Target_Dir ""
-# ADD CPP /nologo /W3 /GX /ZI /Od /D "_DEBUG" /D "WIN32" /D "_MBCS" /FR /FD /GZ /c  /MT /I "." /I ".." /I ".\SimGear" /I "..\zlib-1.2.3" /I "..\OpenAL 1.0 Software Development Kit\include" /D "_USE_MATH_DEFINES" /D "_CRT_SECURE_NO_DEPRECATE" /D "HAVE_CONFIG_H"
+# ADD CPP /nologo /W3 /GX /ZI /Od /D "_DEBUG" /D "WIN32" /D "_MBCS" /FR /FD /GZ /c  /MTd /I "." /I ".." /I ".\SimGear" /I "..\zlib-1.2.3" /I "..\OpenAL 1.0 Software Development Kit\include" /D "_USE_MATH_DEFINES" /D "_CRT_SECURE_NO_DEPRECATE" /D "HAVE_CONFIG_H"
 # ADD RSC /l 0x409 /d "_DEBUG"
 BSC32=bscmake.exe
 # ADD BASE BSC32 /nologo