diff --git a/.gitignore b/.gitignore
index f2403fc44fb..aa7ca42c5b2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 config.json
+config.dat
 node_modules
 lib
diff --git a/Dockerfile b/Dockerfile
index e0abbc656a2..d1917cff668 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,3 +1,3 @@
 FROM golang:onbuild
-COPY config_example.json config.json
+COPY config_example.dat config.dat
 
diff --git a/config.go b/config.go
index 9c123e83426..513424ec2d0 100644
--- a/config.go
+++ b/config.go
@@ -28,7 +28,7 @@ var (
 	ErrExchangeNotFound                             = "Exchange %s: Not found."
 	ErrNoEnabledExchanges                           = "No Exchanges enabled."
 	ErrCryptocurrenciesEmpty                        = "Cryptocurrencies variable is empty."
-	ErrFailureOpeningConfig                         = "Fatal error opening config.json file. Error: %s"
+	ErrFailureOpeningConfig                         = "Fatal error opening %s file. Error: %s"
 	ErrCheckingConfigValues                         = "Fatal error checking config values. Error: %s"
 	ErrSavingConfigBytesMismatch                    = "Config file %q bytes comparison doesn't match, read %s expected %s."
 	WarningSMSGlobalDefaultOrEmptyValues            = "WARNING -- SMS Support disabled due to default or empty Username/Password values."
@@ -275,7 +275,7 @@ func SaveConfig() error {
 func LoadConfig() error {
 	err := ReadConfig()
 	if err != nil {
-		return fmt.Errorf(ErrFailureOpeningConfig, err)
+		return fmt.Errorf(ErrFailureOpeningConfig, CONFIG_FILE, err)
 	}
 
 	err = CheckExchangeConfigValues()