diff --git a/test/config.py b/test/config.py
index a68de77d6e..7fdfb7c4ed 100644
--- a/test/config.py
+++ b/test/config.py
@@ -46,6 +46,7 @@ args_ping = None
 have_lua = False
 have_nghttp2 = False
 have_kerberos = False
+have_libgcrypt16 = False
 have_libgcrypt17 = False
 
 test_env = None
@@ -91,10 +92,12 @@ def getTsharkInfo():
     global have_lua
     global have_nghttp2
     global have_kerberos
+    global have_libgcrypt16
     global have_libgcrypt17
     have_lua = False
     have_nghttp2 = False
     have_kerberos = False
+    have_libgcrypt16 = False
     have_libgcrypt17 = False
     try:
         tshark_v_blob = str(subprocess.check_output((cmd_tshark, '--version'), stderr=subprocess.PIPE))
@@ -106,6 +109,7 @@ def getTsharkInfo():
         if re.search('(with +MIT +Kerberos|with +Heimdal +Kerberos)', tshark_v):
             have_kerberos = True
         gcry_m = re.search('with +Gcrypt +([0-9]+\.[0-9]+)', tshark_v)
+        have_libgcrypt16 = gcry_m and float(gcry_m.group(1)) >= 1.6
         have_libgcrypt17 = gcry_m and float(gcry_m.group(1)) >= 1.7
     except:
         pass
diff --git a/test/suite_decryption.py b/test/suite_decryption.py
index a007b6f8e7..615cf0ba56 100644
--- a/test/suite_decryption.py
+++ b/test/suite_decryption.py
@@ -68,9 +68,12 @@ class case_decrypt_80211(subprocesstest.SubprocessTestCase):
 
     def test_80211_wpa_tdls(self):
         '''WPA decode traffic in a TDLS (Tunneled Direct-Link Setup) session (802.11z)'''
+        if not config.have_libgcrypt16:
+            self.skipTest('Requires GCrypt 1.6 or later.')
         # Included in git sources test/captures/wpa-test-decode-tdls.pcap.gz
         capture_file = os.path.join(config.capture_dir, 'wpa-test-decode-tdls.pcap.gz')
         self.runProcess((config.cmd_tshark,
+                #'-ouat:80211_keys:"wpa-pwd","12345678"',
                 '-o', 'wlan.enable_decryption: TRUE',
                 '-r', capture_file,
                 '-Y', 'icmp',