diff --git a/build.html b/build.html
index 7e845f0..9eebdff 100644
--- a/build.html
+++ b/build.html
@@ -407,9 +407,9 @@ function onOptionsChanged() {
     commands.push('cd vcpkg');
     commands.push(local + 'bootstrap-vcpkg.bat');
     if (build_64bit) {
-      commands.push(local + 'vcpkg.exe install gperf openssl:x64-windows zlib:x64-windows');
+      commands.push(local + 'vcpkg.exe install gperf:x64-windows openssl:x64-windows zlib:x64-windows');
     } else {
-      commands.push(local + 'vcpkg.exe install gperf openssl:x86-windows zlib:x86-windows');
+      commands.push(local + 'vcpkg.exe install gperf:x86-windows openssl:x86-windows zlib:x86-windows');
     }
     commands.push('cd ..');
   }