diff --git a/source/vcpp/cube.vcproj b/source/vcpp/cube.vcproj
index fcfcf4d3..1bf49516 100644
--- a/source/vcpp/cube.vcproj
+++ b/source/vcpp/cube.vcproj
@@ -68,7 +68,6 @@
 				ProgramDataBaseFileName=".\Release/"
 				WarningLevel="3"
 				SuppressStartupBanner="true"
-				Detect64BitPortabilityProblems="true"
 				DebugInformationFormat="1"
 				CompileAs="0"
 			/>
@@ -100,7 +99,6 @@
 				SubSystem="2"
 				OptimizeReferences="2"
 				EnableCOMDATFolding="2"
-				OptimizeForWindows98="1"
 				RandomizedBaseAddress="1"
 				DataExecutionPrevention="0"
 			/>
@@ -171,7 +169,6 @@
 				ProgramDataBaseFileName=".\Debug/"
 				WarningLevel="3"
 				SuppressStartupBanner="true"
-				Detect64BitPortabilityProblems="true"
 				DebugInformationFormat="4"
 				CompileAs="0"
 				EnablePREfast="false"
@@ -280,7 +277,6 @@
 				BrowseInformation="1"
 				WarningLevel="3"
 				SuppressStartupBanner="true"
-				Detect64BitPortabilityProblems="true"
 				CompileAs="0"
 			/>
 			<Tool
@@ -309,7 +305,6 @@
 				MapFileName=".\Release/cube.map"
 				MapExports="true"
 				SubSystem="2"
-				OptimizeForWindows98="1"
 				RandomizedBaseAddress="1"
 				DataExecutionPrevention="0"
 			/>
@@ -384,7 +379,6 @@
 				PrecompiledHeaderFile=".\Standalone/cube.pch"
 				WarningLevel="3"
 				SuppressStartupBanner="true"
-				Detect64BitPortabilityProblems="true"
 				DebugInformationFormat="1"
 				CompileAs="0"
 			/>
@@ -415,7 +409,6 @@
 				SubSystem="1"
 				OptimizeReferences="2"
 				EnableCOMDATFolding="2"
-				OptimizeForWindows98="1"
 				RandomizedBaseAddress="1"
 				DataExecutionPrevention="0"
 			/>
@@ -480,7 +473,6 @@
 				PrecompiledHeaderFile=".\Standalone-Debug/cube.pch"
 				WarningLevel="3"
 				SuppressStartupBanner="true"
-				Detect64BitPortabilityProblems="true"
 				DebugInformationFormat="4"
 				CompileAs="0"
 			/>