diff --git a/llvm/Makefile.config.in b/llvm/Makefile.config.in
index f2239ef6a0eb..96e5733ec797 100644
--- a/llvm/Makefile.config.in
+++ b/llvm/Makefile.config.in
@@ -160,7 +160,7 @@ OCAMLC     := @OCAMLC@
 OCAMLOPT   := @OCAMLOPT@
 OCAMLDEP   := @OCAMLDEP@
 OCAMLDOC   := @OCAMLDOC@
-GAS	   := @GAS@
+GAS        := @GAS@
 POD2HTML   := @POD2HTML@
 POD2MAN    := @POD2MAN@
 RUNTEST    := @RUNTEST@