diff --git a/config/config.go b/config/config.go
index f341547ad..5513c68c6 100644
--- a/config/config.go
+++ b/config/config.go
@@ -516,7 +516,7 @@ func loadConfig(c *conf.ConfigFile) (*CGRConfig, error) {
 		}
 	}
 	if hasOpt = c.HasOption("session_manager", "max_call_duration"); hasOpt {
-		maxCallDurStr, _ := c.GetString("session_manager", "min_call_duration")
+		maxCallDurStr, _ := c.GetString("session_manager", "max_call_duration")
 		if cfg.SMMaxCallDuration, err = utils.ParseDurationWithSecs(maxCallDurStr); err != nil {
 			return nil, err
 		}
diff --git a/config/config_test.go b/config/config_test.go
index 698fdf922..fa37603af 100644
--- a/config/config_test.go
+++ b/config/config_test.go
@@ -248,7 +248,7 @@ func TestConfigFromFile(t *testing.T) {
 	eCfg.SMRater = "test"
 	eCfg.SMRaterReconnects = 99
 	eCfg.SMDebitInterval = 99
-	eCfg.SMMinCallDuration = time.Duration(99) * time.Second
+	eCfg.SMMinCallDuration = time.Duration(98) * time.Second
 	eCfg.SMMaxCallDuration = time.Duration(99) * time.Second
 	eCfg.FreeswitchServer = "test"
 	eCfg.FreeswitchPass = "test"
diff --git a/config/test_data.txt b/config/test_data.txt
index 9cd147771..48662cf0d 100644
--- a/config/test_data.txt
+++ b/config/test_data.txt
@@ -92,7 +92,7 @@ rater = test				# Address where to reach the Rater.
 rater_reconnects = 99			# Number of reconnects to rater before giving up.
 debit_interval = 99			# Interval to perform debits on.
 max_call_duration = 99			# Maximum call duration a prepaid call can last
-min_call_duration = 99        # Only authorize calls with allowed duration bigger than this
+min_call_duration = 98        # Only authorize calls with allowed duration bigger than this
 
 [freeswitch]
 server = test				# Adress where to connect to FreeSWITCH socket.