diff --git a/sjrpc/core/exceptions.py b/sjrpc/core/exceptions.py
index 81252a2183e77d7961afc1a300a0158be5a2f254..f1c874241d2cb1f6557e74bb9bb1967a73793732 100644
--- a/sjrpc/core/exceptions.py
+++ b/sjrpc/core/exceptions.py
@@ -2,15 +2,15 @@
 #coding:utf8
 
 class RpcError(Exception):
-	
-	'''
-	Exception raised by caller when an error occurs while execution of remote
-	procedure call.
-	'''
-	
-	def __init__(self, exception, message):
-		self.exception = exception
-		self.message = message
-	
-	def __str__(self):
-		return '%s' % self.message
+    
+    '''
+    Exception raised by caller when an error occurs while execution of remote
+    procedure call.
+    '''
+    
+    def __init__(self, exception, message):
+        self.exception = exception
+        self.message = message
+    
+    def __str__(self):
+        return '%s' % self.message