diff --git a/generate/msvc2017/AslCompiler.vcxproj b/generate/msvc2017/AslCompiler.vcxproj
index 13655cfdae..ad9f793ccc 100755
--- a/generate/msvc2017/AslCompiler.vcxproj
+++ b/generate/msvc2017/AslCompiler.vcxproj
@@ -126,7 +126,7 @@
       <FunctionLevelLinking>false</FunctionLevelLinking>
       <Optimization>Disabled</Optimization>
       <SuppressStartupBanner>true</SuppressStartupBanner>
-      <WarningLevel>Level3</WarningLevel>
+      <WarningLevel>Level4</WarningLevel>
       <MinimalRebuild>false</MinimalRebuild>
       <OmitFramePointers>false</OmitFramePointers>
       <StringPooling>true</StringPooling>
@@ -388,7 +388,9 @@
       <WarningLevel Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">Level4</WarningLevel>
       <PreprocessorDefinitions Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">_CRT_SECURE_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
     </ClCompile>
-    <ClCompile Include="aslcompiler.y.c" />
+    <ClCompile Include="aslcompiler.y.c">
+      <WarningLevel Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">Level4</WarningLevel>
+    </ClCompile>
     <ClCompile Include="dtparser.l.c">
       <PreprocessorDefinitions Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">_CRT_SECURE_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <WarningLevel Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">Level4</WarningLevel>