diff --git a/site/source/docs/tools_reference/settings_reference.rst b/site/source/docs/tools_reference/settings_reference.rst
index dae60df34ed2b..d3df18d195513 100644
--- a/site/source/docs/tools_reference/settings_reference.rst
+++ b/site/source/docs/tools_reference/settings_reference.rst
@@ -427,6 +427,8 @@ function call that uses DataView to enforce LE byte order for HEAP buffer;
 This makes generated JavaScript run on BE as well as LE machines. (If 0, only
 LE systems are supported). Does not affect generated wasm.
 
+.. note:: This is an experimental setting
+
 Default value: false
 
 .. _safe_heap:
diff --git a/src/settings.js b/src/settings.js
index 92dfd20b2a750..32c6e49d55e89 100644
--- a/src/settings.js
+++ b/src/settings.js
@@ -317,6 +317,7 @@ var INLINING_LIMIT = false;
 // function call that uses DataView to enforce LE byte order for HEAP buffer;
 // This makes generated JavaScript run on BE as well as LE machines. (If 0, only
 // LE systems are supported). Does not affect generated wasm.
+// [experimental]
 var SUPPORT_BIG_ENDIAN = false;
 
 // Check each write to the heap, for example, this will give a clear
diff --git a/tools/link.py b/tools/link.py
index ccaac6bae8106..d9091a22f287c 100644
--- a/tools/link.py
+++ b/tools/link.py
@@ -840,6 +840,9 @@ def phase_linker_setup(options, linker_args):  # noqa: C901, PLR0912, PLR0915
   if settings.GROWABLE_ARRAYBUFFERS:
     diagnostics.warning('experimental', '-sGROWABLE_ARRAYBUFFERS is still experimental and not yet supported in browsers')
 
+  if settings.SUPPORT_BIG_ENDIAN:
+    diagnostics.warning('experimental', '-sSUPPORT_BIG_ENDIAN is experimental, not all features are fully supported.')
+
   if settings.WASM_ESM_INTEGRATION:
     diagnostics.warning('experimental', '-sWASM_ESM_INTEGRATION is still experimental and not yet supported in browsers')
     default_setting('MODULARIZE', 'instance')