diff --git a/spring-cloud-starter-tencent-polaris-config/src/main/java/com/tencent/cloud/polaris/config/adapter/PolarisConfigFileLocator.java b/spring-cloud-starter-tencent-polaris-config/src/main/java/com/tencent/cloud/polaris/config/adapter/PolarisConfigFileLocator.java
index 0a3f5d9e8..89c651b48 100644
--- a/spring-cloud-starter-tencent-polaris-config/src/main/java/com/tencent/cloud/polaris/config/adapter/PolarisConfigFileLocator.java
+++ b/spring-cloud-starter-tencent-polaris-config/src/main/java/com/tencent/cloud/polaris/config/adapter/PolarisConfigFileLocator.java
@@ -118,13 +118,13 @@ public class PolarisConfigFileLocator implements PropertySourceLocator {
 
 	public static ConfigKVFile loadConfigKVFile(ConfigFileService configFileService, String namespace, String group, String fileName) {
 		ConfigKVFile configKVFile;
-		// unknown extension is resolved as properties file
-		if (ConfigFileFormat.isPropertyFile(fileName) || ConfigFileFormat.isUnknownFile(fileName)) {
-			configKVFile = configFileService.getConfigPropertiesFile(namespace, group, fileName);
-		}
-		else if (ConfigFileFormat.isYamlFile(fileName)) {
+		// unknown extension is resolved as yaml file
+		if (ConfigFileFormat.isYamlFile(fileName) || ConfigFileFormat.isUnknownFile(fileName)) {
 			configKVFile = configFileService.getConfigYamlFile(namespace, group, fileName);
 		}
+		else if (ConfigFileFormat.isPropertyFile(fileName)) {
+			configKVFile = configFileService.getConfigPropertiesFile(namespace, group, fileName);
+		}
 		else {
 			LOGGER.warn("[SCT Config] Unsupported config file. namespace = {}, group = {}, fileName = {}", namespace, group, fileName);