diff --git a/src/sysdep.c b/src/sysdep.c
index a1b0ace8375..80027f30769 100644
--- a/src/sysdep.c
+++ b/src/sysdep.c
@@ -3752,7 +3752,7 @@ system_process_attributes (Lisp_Object pid)
 Lisp_Object
 system_process_attributes (Lisp_Object pid)
 {
-  return Qnil
+  return Qnil;
 }
 
 #endif	/* !defined (WINDOWSNT) */