diff --git a/core/native/build.xml b/core/native/build.xml
index b216c68a96..1eca549a17 100644
--- a/core/native/build.xml
+++ b/core/native/build.xml
@@ -48,6 +48,7 @@
             <target name="Test" />
 
             <property name="Configuration" value="${msbuild.configuration}" />
+            <property name="Platform" value="x64" />
         </msbuild>
     </target>
 </project>
\ No newline at end of file
diff --git a/windows/build.xml b/windows/build.xml
index 51e383cbfe..49087fb388 100755
--- a/windows/build.xml
+++ b/windows/build.xml
@@ -49,6 +49,7 @@
             <target name="Test" />
 
             <property name="Configuration" value="${msbuild.configuration}" />
+            <property name="Platform" value="x64" />
         </msbuild>
     </target>