diff --git a/Configure b/Configure
index 4e4681ae8f..a6c9af9398 100755
--- a/Configure
+++ b/Configure
@@ -741,6 +741,7 @@ my @user_crossable = qw ( AR AS CC CXX CPP LD MT RANLIB RC );
 # input, as opposed to the VAR=string option that override the corresponding
 # config target attributes
 my %useradd = (
+    ASFLAGS     => [],
     CPPDEFINES  => [],
     CPPINCLUDES => [],
     CPPFLAGS    => [],