diff --git a/extensions/curl/curl-src/lib/AMBuilder b/extensions/curl/curl-src/lib/AMBuilder
index 23d73545..721af044 100644
--- a/extensions/curl/curl-src/lib/AMBuilder
+++ b/extensions/curl/curl-src/lib/AMBuilder
@@ -25,7 +25,7 @@ elif builder.target_platform == 'linux':
 
 if binary.compiler.vendor == 'clang':
   # https://llvm.org/bugs/show_bug.cgi?id=16428
-  binary.compiler.cflags += ['-Wno-unknown-attributes']
+  binary.compiler.cflags += ['-Wno-attributes']
 
 binary.sources += [
   'base64.c',