diff --git a/script/release/uploaders/upload-symbols.py b/script/release/uploaders/upload-symbols.py
index 6de7dd629157..44773611e4fe 100755
--- a/script/release/uploaders/upload-symbols.py
+++ b/script/release/uploaders/upload-symbols.py
@@ -5,6 +5,11 @@ import os
 import shutil
 import subprocess
 import sys
+import tempfile
+
+def is_fs_case_sensitive():
+  with tempfile.NamedTemporaryFile(prefix='TmP') as tmp_file:
+    return(not os.path.exists(tmp_file.name.lower()))
 
 sys.path.append(
   os.path.abspath(os.path.dirname(os.path.abspath(__file__)) + "/../.."))
@@ -50,15 +55,16 @@ def main():
 
   # The symbol server needs lowercase paths, it will fail otherwise
   # So lowercase all the file paths here
-  for f in files:
-    lower_f = f.lower()
-    if lower_f != f:
-      if os.path.exists(lower_f):
-        shutil.rmtree(lower_f)
-      lower_dir = os.path.dirname(lower_f)
-      if not os.path.exists(lower_dir):
-        os.makedirs(lower_dir)
-      shutil.copy2(f, lower_f)
+  if is_fs_case_sensitive():
+    for f in files:
+      lower_f = f.lower()
+      if lower_f != f:
+        if os.path.exists(lower_f):
+          shutil.rmtree(lower_f)
+        lower_dir = os.path.dirname(lower_f)
+        if not os.path.exists(lower_dir):
+          os.makedirs(lower_dir)
+        shutil.copy2(f, lower_f)
   files = [f.lower() for f in files]
   for f in files:
     assert os.path.exists(f)