diff --git a/SConstruct b/SConstruct
index 7bedd0b..4cd391b 100644
--- a/SConstruct
+++ b/SConstruct
@@ -55,6 +55,7 @@ alock_options.AddOptions(
         BoolOption('amd5', 'build a little md5-helper', 0),
         BoolOption('asha1', 'build a little sha1-helper', 0),
         BoolOption('asha2', 'build a little sha2-helper', 0),
+        BoolOption('awpool', 'build a little whirlpool-helper', 0),
 
         PathOption('PREFIX', 'install-path base', '/usr/local'),
         PathOption('DESTDIR', 'install to $DESTDIR/$PREFIX', '/')
@@ -196,6 +197,9 @@ if alock_env['asha1']:
 if alock_env['asha2']:
     default_targets += [ 'src/asha2' ]
 
+if alock_env['awpool']:
+    default_targets += [ 'src/awpool' ]
+
 Default(default_targets)
 
 alock_options.Save('scons.opts', alock_env)
diff --git a/src/SConscript b/src/SConscript
index 0f89120..02224e4 100644
--- a/src/SConscript
+++ b/src/SConscript
@@ -18,7 +18,7 @@ build =  alock_env.Copy()
 if build['passwd']:
     auth_sources += [ 'auth_passwd.c' ]
 if build['hash']:
-    auth_sources += [ 'auth_md5.c', 'auth_sha1.c', 'auth_sha2.c', 'auth_wpool' ]
+    auth_sources += [ 'auth_md5.c', 'auth_sha1.c', 'auth_sha2.c', 'auth_wpool.c' ]
 if build['pam']:
     auth_sources += [ 'auth_pam.c' ]
 
diff --git a/src/alock.c b/src/alock.c
index 918fd7e..c2b4eb7 100644
--- a/src/alock.c
+++ b/src/alock.c
@@ -1,5 +1,3 @@
-
-
 /* ---------------------------------------------------------------- *\
 
   file    : alock.c