diff --git a/openttd.vcproj b/openttd.vcproj
--- a/openttd.vcproj
+++ b/openttd.vcproj
@@ -23,7 +23,7 @@
 				Name="VCCLCompilerTool"
 				Optimization="3"
 				GlobalOptimizations="TRUE"
-				InlineFunctionExpansion="1"
+				InlineFunctionExpansion="2"
 				EnableIntrinsicFunctions="TRUE"
 				FavorSizeOrSpeed="2"
 				OmitFramePointers="TRUE"
@@ -58,11 +58,8 @@
 				OutputFile=".\Release/openttd.exe"
 				LinkIncremental="1"
 				SuppressStartupBanner="TRUE"
+				GenerateDebugInformation="TRUE"
 				ProgramDatabaseFile=".\Release/openttd.pdb"
-				GenerateMapFile="TRUE"
-				MapFileName=".\Release/openttd.map"
-				MapExports="TRUE"
-				MapLines="TRUE"
 				SubSystem="2"
 				OptimizeReferences="2"
 				OptimizeForWindows98="1"