diff --git a/database/all/connection.go b/database/all/connection.go
index e85bfaa..23fd14b 100644
--- a/database/all/connection.go
+++ b/database/all/connection.go
@@ -23,16 +23,12 @@ func Connect(allConnection map[string]interface{}) (database.Connection, error)
 			log.WithField("database", dbType).Infof("no configuration found")
 			continue
 		}
-		dbConfigs, ok := configForType.([]interface{})
+		dbConfigs, ok := configForType.([]map[string]interface{})
 		if !ok {
-			return nil, fmt.Errorf("the database type '%s' has the wrong format", dbType)
+			return nil, fmt.Errorf("the database type '%s' has the wrong format: read format %T should be an []map[string]interface{}", dbType, configForType)
 		}
 
-		for _, dbConfig := range dbConfigs {
-			config, ok := dbConfig.(map[string]interface{})
-			if !ok {
-				return nil, fmt.Errorf("the database type '%s' has the wrong format", dbType)
-			}
+		for _, config := range dbConfigs {
 			if c, ok := config["enable"].(bool); ok && !c {
 				continue
 			}
diff --git a/output/all/output.go b/output/all/output.go
index 14d1cc1..73c1383 100644
--- a/output/all/output.go
+++ b/output/all/output.go
@@ -27,15 +27,11 @@ func Register(configuration map[string]interface{}) (output.Output, error) {
 			log.WithField("output", outputType).Infof("no configuration found")
 			continue
 		}
-		outputConfigs, ok := configForOutput.([]interface{})
+		outputConfigs, ok := configForOutput.([]map[string]interface{})
 		if !ok {
-			return nil, fmt.Errorf("the output type '%s' has the wrong format", outputType)
+			return nil, fmt.Errorf("the output type '%s' has the wrong format: read format %T should be an []map[string]interface{}", outputType, configForOutput)
 		}
-		for _, outputConfig := range outputConfigs {
-			config, ok := outputConfig.(map[string]interface{})
-			if !ok {
-				return nil, fmt.Errorf("the output type '%s' has the wrong format", outputType)
-			}
+		for _, config := range outputConfigs {
 			if c, ok := config["enable"].(bool); ok && !c {
 				continue
 			}