diff --git a/backends/xnnpack/targets.bzl b/backends/xnnpack/targets.bzl
index 1d959048032..b89a999bc3d 100644
--- a/backends/xnnpack/targets.bzl
+++ b/backends/xnnpack/targets.bzl
@@ -6,7 +6,7 @@ def _get_preprocessor_flags():
     Disable if someone explictly specified a config option,
     else Enable otherwise
     """
-    if native.read_config("executorch", "xnnpack_workspace_sharing", "1") == "0":
+    if native.read_config("executorch", "xnnpack_workspace_sharing", "0") == "0":
         return []
 
     # Enable if not disabled through config