diff --git a/libcxx/test/std/iterators/iterator.primitives/iterator.operations/advance.pass.cpp b/libcxx/test/std/iterators/iterator.primitives/iterator.operations/advance.pass.cpp
--- a/libcxx/test/std/iterators/iterator.primitives/iterator.operations/advance.pass.cpp
+++ b/libcxx/test/std/iterators/iterator.primitives/iterator.operations/advance.pass.cpp
@@ -20,7 +20,7 @@
 //   constexpr void advance(Iter& i, Distance n);
 
 // Make sure we catch forced conversions to the difference_type if they happen.
-// ADDITIONAL_COMPILER_FLAGS: -Wsign-conversion
+// ADDITIONAL_COMPILE_FLAGS: -Wsign-conversion
 
 #include <iterator>
 #include <cassert>