diff --git a/build.sh b/build.sh
index 545c913f92c90694b38fb0b1d38f0371badfaa0a..bafee86206d8f1960bca6672d6480d961ee6b836 100755
--- a/build.sh
+++ b/build.sh
@@ -140,6 +140,7 @@ pre_build()
     "$autobuild" configure --quiet -c $variant -- \
      -DPACKAGE:BOOL=ON \
      -DHAVOK:BOOL="$HAVOK" \
+     -DCMAKE_SYSTEM_VERSION:STRING="10.0" \
      -DRELEASE_CRASH_REPORTING:BOOL="$RELEASE_CRASH_REPORTING" \
      -DVIEWER_SYMBOL_FILE:STRING="${VIEWER_SYMBOL_FILE:-}" \
      -DBUGSPLAT_DB:STRING="${BUGSPLAT_DB:-}" \