diff --git a/libs/esl/src/esl.2008.vcproj b/libs/esl/src/esl.2008.vcproj
index 101348dd59..89daa17d9e 100644
--- a/libs/esl/src/esl.2008.vcproj
+++ b/libs/esl/src/esl.2008.vcproj
@@ -290,6 +290,10 @@
 				RelativePath=".\esl.c"
 				>
 			</File>
+			<File
+				RelativePath=".\esl_buffer.c"
+				>
+			</File>
 			<File
 				RelativePath=".\esl_config.c"
 				>
@@ -316,6 +320,10 @@
 				RelativePath=".\include\esl.h"
 				>
 			</File>
+			<File
+				RelativePath=".\include\esl_buffer.h"
+				>
+			</File>
 			<File
 				RelativePath=".\include\esl_config.h"
 				>
diff --git a/libs/esl/src/esl.2010.vcxproj b/libs/esl/src/esl.2010.vcxproj
index b215fe4bc8..fd5e3a8353 100644
--- a/libs/esl/src/esl.2010.vcxproj
+++ b/libs/esl/src/esl.2010.vcxproj
@@ -128,6 +128,7 @@
     <ClCompile Include="esl_event.c" />
     <ClCompile Include="esl_json.c" />
     <ClCompile Include="esl_threadmutex.c" />
+	 <ClCompile Include="esl_buffer.c" />
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="include\esl.h" />
@@ -135,6 +136,7 @@
     <ClInclude Include="include\esl_event.h" />
     <ClInclude Include="include\esl_json.h" />
     <ClInclude Include="include\esl_threadmutex.h" />
+	 <ClInclude Include="include\esl_buffer.h" />
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">