diff --git a/src/mint/test_taler_mint_httpd_afl.sh b/src/mint/test_taler_mint_httpd_afl.sh
index 62ad43610..a5ae081e7 100755
--- a/src/mint/test_taler_mint_httpd_afl.sh
+++ b/src/mint/test_taler_mint_httpd_afl.sh
@@ -23,10 +23,12 @@
 #
 # Setup keys.
 taler-mint-keyup -d test-mint-home -m test-mint-home/master.priv
+# Only log hard errors, we expect lots of warnings...
+export GNUNET_FORCE_LOG="taler-mint-httpd;;;;ERROR/libmicrohttpd;;;;ERROR/"
 # Run test...
-for n in afl-tests/*.req
+for n in afl-tests/*
 do
-  echo -n "Test $n"
+  echo -n "Test $n "
   taler-mint-httpd -d test-mint-home/ -t 1 -f $n -C > /dev/null || { echo "FAIL!"; exit 1; }
   echo "OK"
 done
diff --git a/src/util/json.c b/src/util/json.c
index 8faee6035..9f7623b2a 100644
--- a/src/util/json.c
+++ b/src/util/json.c
@@ -305,7 +305,7 @@ TALER_json_to_amount (json_t *json,
       GNUNET_break (0);
       return GNUNET_SYSERR;
     }
-    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+    GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
                 "Malformed JSON amount: %s\n",
                 json_enc);
     free (json_enc);