diff --git a/scripts/run_performance_job.py b/scripts/run_performance_job.py
index dabe5cb05d5..0904e70a771 100644
--- a/scripts/run_performance_job.py
+++ b/scripts/run_performance_job.py
@@ -443,12 +443,6 @@ def get_bdn_arguments(
             "--wasmProcessTimeout", "20",
         ]
 
-        # The runtime now uses the standardized exnref WASM exception-handling proposal,
-        # which V8 keeps behind --experimental-wasm-exnref. Pass it through to the engine
-        # via BDN's --wasmArgs (the escaped quotes keep it a single token on the Helix shell).
-        if javascript_engine == "v8":
-            bdn_arguments += ["\\\"--wasmArgs=--experimental-wasm-exnref\\\""]
-
         if is_aot:
             bdn_arguments += [
                 "--aotcompilermode", "wasm",
@@ -466,12 +460,6 @@ def get_bdn_arguments(
             "--wasmProcessTimeout", "20"
         ]
 
-        # The runtime now uses the standardized exnref WASM exception-handling proposal,
-        # which V8 keeps behind --experimental-wasm-exnref. Pass it through to the engine
-        # via BDN's --wasmArgs (the escaped quotes keep it a single token on the Helix shell).
-        if javascript_engine == "v8":
-            bdn_arguments += ["\\\"--wasmArgs=--experimental-wasm-exnref\\\""]
-
     if runtime_type == "coreclr_r2r_interpreter":
         if os_group == "windows":
             bdn_arguments += [