Index: /tmp/preset-passphrase.c
===================================================================
--- /tmp/preset-passphrase.c
+++ /tmp/preset-passphrase.c
@@ -194,10 +194,18 @@
 		 gpg_strerror (gpg_error_from_syserror ()));
       return;
     }
+
+  rc = map_spwq_error (simple_query (line));
+  if (rc)
+    {
+      log_error ("clearing passphrase failed: %s\n", gpg_strerror (rc));
+      return;
+    }
+
+  wipememory (line, strlen (line));
   xfree (line);
 }
 
-
 int
 main (int argc, char **argv)
 {