diff --git a/libcxxabi/src/Unwind/UnwindRegistersRestore_.s b/libcxxabi/src/Unwind/UnwindRegistersRestore.S
similarity index 99%
rename from libcxxabi/src/Unwind/UnwindRegistersRestore_.s
rename to libcxxabi/src/Unwind/UnwindRegistersRestore.S
index fb6be617b005..5e24e0da05bb 100644
--- a/libcxxabi/src/Unwind/UnwindRegistersRestore_.s
+++ b/libcxxabi/src/Unwind/UnwindRegistersRestore.S
@@ -1,4 +1,4 @@
-//===-------------------- UnwindRegistersRestore.s ------------------------===//
+//===-------------------- UnwindRegistersRestore.S ------------------------===//
 //
 //                     The LLVM Compiler Infrastructure
 //
diff --git a/libcxxabi/src/Unwind/UnwindRegistersSave_.s b/libcxxabi/src/Unwind/UnwindRegistersSave.S
similarity index 99%
rename from libcxxabi/src/Unwind/UnwindRegistersSave_.s
rename to libcxxabi/src/Unwind/UnwindRegistersSave.S
index 834e2600696a..674f8133705d 100644
--- a/libcxxabi/src/Unwind/UnwindRegistersSave_.s
+++ b/libcxxabi/src/Unwind/UnwindRegistersSave.S
@@ -1,4 +1,4 @@
-//===------------------------ UnwindRegistersSave.s -----------------------===//
+//===------------------------ UnwindRegistersSave.S -----------------------===//
 //
 //                     The LLVM Compiler Infrastructure
 //