diff --git a/include/llvm/Config/config.h.in b/include/llvm/Config/config.h.in
index 765b3e100fe..478de7d5547 100644
--- a/include/llvm/Config/config.h.in
+++ b/include/llvm/Config/config.h.in
@@ -219,11 +219,11 @@
 #undef SHLIBEXT
 
 /* If using the C implementation of alloca, define if you know the
-   direction of stack growth for your system; otherwise it will be
+   direction of stack growth for your system; otherwise, it will be
    automatically deduced at run-time.
-	STACK_DIRECTION > 0 => grows toward higher addresses
-	STACK_DIRECTION < 0 => grows toward lower addresses
-	STACK_DIRECTION = 0 => direction of growth unknown */
+       STACK_DIRECTION > 0 => grows toward higher addresses
+       STACK_DIRECTION < 0 => grows toward lower addresses
+       STACK_DIRECTION = 0 => direction of growth unknown */
 #undef STACK_DIRECTION
 
 /* Define to 1 if you have the ANSI C header files. */