diff --git a/w32/vsnet/Tools/libsndfile.vcproj b/w32/vsnet/Tools/libsndfile.vcproj
index 98d449401c..3c608d605e 100644
--- a/w32/vsnet/Tools/libsndfile.vcproj
+++ b/w32/vsnet/Tools/libsndfile.vcproj
@@ -20,7 +20,7 @@
 			OutputDirectory="$(SolutionDir)$(ConfigurationName)"
 			IntermediateDirectory="$(ConfigurationName)"
 			ConfigurationType="4"
-			CharacterSet="1"
+			CharacterSet="0"
 			>
 			<Tool
 				Name="VCPreBuildEventTool"
@@ -39,6 +39,7 @@
 			/>
 			<Tool
 				Name="VCCLCompilerTool"
+				UseUnicodeResponseFiles="true"
 				Optimization="0"
 				AdditionalIncludeDirectories="..\src;."
 				PreprocessorDefinitions="WIN32;_DEBUG;_LIB;inline=__inline;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_DEPRECATE"
@@ -84,7 +85,7 @@
 			OutputDirectory="$(SolutionDir)$(ConfigurationName)"
 			IntermediateDirectory="$(ConfigurationName)"
 			ConfigurationType="4"
-			CharacterSet="1"
+			CharacterSet="0"
 			WholeProgramOptimization="1"
 			>
 			<Tool
@@ -104,6 +105,7 @@
 			/>
 			<Tool
 				Name="VCCLCompilerTool"
+				UseUnicodeResponseFiles="true"
 				AdditionalIncludeDirectories="..\src;."
 				PreprocessorDefinitions="WIN32;NDEBUG;_LIB;inline=__inline;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_DEPRECATE"
 				RuntimeLibrary="2"