diff --git a/cryptlib.vcxproj b/cryptlib.vcxproj
index 674ad9ee..e1c83be2 100644
--- a/cryptlib.vcxproj
+++ b/cryptlib.vcxproj
@@ -319,17 +319,17 @@
     <CustomBuild Condition="'$(Platform)'=='Win32'" Include="rdrand.asm">
       <Message>Building and assembling rdrand.asm</Message>
       <Command>ml.exe /c /nologo /D_M_X86 /W3 /Cx /Zi /safeseh /Fo"$(IntDir)rdrand-x86.obj" "%(FullPath)"</Command>
-      <Outputs>$(IntDir)\rdrand-x86.obj</Outputs>
+      <Outputs>$(IntDir)\rdrand-x86.obj;%(Outputs)</Outputs>
     </CustomBuild>
     <CustomBuild Condition="'$(Platform)'=='x64'" Include="rdrand.asm">
       <Message>Building and assembling rdrand.asm</Message>
       <Command>ml64.exe /c /nologo /D_M_X64 /W3 /Cx /Zi /Fo"$(IntDir)rdrand-x64.obj" "%(FullPath)"</Command>
-      <Outputs>$(IntDir)\rdrand-x64.obj</Outputs>
+      <Outputs>$(IntDir)\rdrand-x64.obj;%(Outputs)</Outputs>
     </CustomBuild>
     <CustomBuild Condition="'$(Platform)'=='x64' AND ('$(Configuration)'=='Debug' Or '$(Configuration)'=='Release')" Include="x64dll.asm">
       <Message>Building and assembling x64dll.asm</Message>
       <Command>ml64.exe /c /nologo /D_M_X64 /W3 /Zi /Fo"$(IntDir)x64dll.obj" "%(FullPath)"</Command>
-      <Outputs>$(IntDir)x64dll.obj</Outputs>
+      <Outputs>$(IntDir)x64dll.obj;%(Outputs)</Outputs>
     </CustomBuild>
     <CustomBuild Condition="'$(Platform)'=='x64'" Include="x64masm.asm">
       <Message>Building and Assembling x64masm.asm</Message>