diff --git a/clients/config-kie-client/src/main/java/org/apache/servicecomb/config/kie/client/KieConfigManager.java b/clients/config-kie-client/src/main/java/org/apache/servicecomb/config/kie/client/KieConfigManager.java
index 38f6a39..298a2c0 100644
--- a/clients/config-kie-client/src/main/java/org/apache/servicecomb/config/kie/client/KieConfigManager.java
+++ b/clients/config-kie-client/src/main/java/org/apache/servicecomb/config/kie/client/KieConfigManager.java
@@ -73,8 +73,6 @@
           r.setRevision(response.getRevision());
           r.setLastRawData(response.getConfigurations());
           data.putAll(response.getConfigurations());
-        } else {
-          throw new IllegalStateException("can not fetch config data.");
         }
       });
       this.configConverter.updateData(data);
diff --git a/dynamic-config/config-cc/src/main/java/org/apache/servicecomb/config/ConfigCenterConfigurationSourceImpl.java b/dynamic-config/config-cc/src/main/java/org/apache/servicecomb/config/ConfigCenterConfigurationSourceImpl.java
index 4d0f8a8..91059b8 100644
--- a/dynamic-config/config-cc/src/main/java/org/apache/servicecomb/config/ConfigCenterConfigurationSourceImpl.java
+++ b/dynamic-config/config-cc/src/main/java/org/apache/servicecomb/config/ConfigCenterConfigurationSourceImpl.java
@@ -111,10 +111,8 @@
       if (response.isChanged()) {
         configConverter.updateData(response.getConfigurations());
         updateConfiguration(WatchedUpdateResult.createIncremental(configConverter.getCurrentData(), null, null));
-      } else {
-        throw new IllegalStateException("can not fetch config data.");
+        queryConfigurationsRequest.setRevision(response.getRevision());
       }
-      queryConfigurationsRequest.setRevision(response.getRevision());
     } catch (Exception e) {
       if (ConfigCenterConfig.INSTANCE.firstPullRequired()) {
         throw e;