diff --git a/lib/parse/cmdline.py b/lib/parse/cmdline.py
index a80a5a243..1cac94b77 100644
--- a/lib/parse/cmdline.py
+++ b/lib/parse/cmdline.py
@@ -149,9 +149,6 @@ def cmdLineParser():
                            help="Max number of concurrent HTTP(s) "
                                 "requests (default 1)")
 
-        optimization.add_option("--group-concat", dest="groupConcat", action="store_true",
-                           default=False, help="Use GROUP_CONCAT (MySQL/error) in dumping phase (experimental)")
-
         # Injection options
         injection = OptionGroup(parser, "Injection", "These options can be "
                                 "used to specify which parameters to test "
@@ -518,6 +515,9 @@ def cmdLineParser():
         parser.add_option("--technique", dest="technique", type="int",
                           default=0, help=SUPPRESS_HELP)
 
+        parser.add_option("--group-concat", dest="groupConcat", action="store_true",
+                           default=False, help=SUPPRESS_HELP)
+
         parser.add_option_group(target)
         parser.add_option_group(request)
         parser.add_option_group(optimization)
diff --git a/sqlmap.conf b/sqlmap.conf
index f8d88080a..06f17b223 100644
--- a/sqlmap.conf
+++ b/sqlmap.conf
@@ -149,10 +149,6 @@ nullConnection = False
 # Default: 1
 threads = 1
 
-# Use GROUP_CONCAT MySQL technique in dumping phase.
-# Valid: True or False
-groupConcat = False
-
 
 # These options can be used to specify which parameters to test for,
 # provide custom injection payloads and optional tampering scripts.