diff --git a/src/libstd/sys/common/stack.rs b/src/libstd/sys/common/stack.rs
index 0ab987273dce6..41c8ac4aed30d 100644
--- a/src/libstd/sys/common/stack.rs
+++ b/src/libstd/sys/common/stack.rs
@@ -293,7 +293,7 @@ pub unsafe fn get_sp_limit() -> usize {
     // powerpc - FIXME(POWERPC): missing...
     // arm-ios - no segmented stacks.
     // openbsd/bitrig/netbsd - no segmented stacks.
-    // x86-freebsd - no segmented stacks. 
+    // x86-freebsd - no segmented stacks..
     //
     // This function might be called by runtime though
     // so it is unsafe to unreachable, let's return a fixed constant.