diff --git a/pyjosa/exceptions.py b/pyjosa/exceptions.py
index db4c8be..854b39e 100644
--- a/pyjosa/exceptions.py
+++ b/pyjosa/exceptions.py
@@ -1,3 +1,7 @@
 class NotHangleException(Exception):
     def __init__(self):
         super().__init__("마지막 글자가 한글이 아닙니다.")
+
+class JosaTypeException(Exception):
+    def __init__(self):
+        super().__init__("메서드의 인자로 주어진 조사가 올바르지 않습니다.")
\ No newline at end of file
diff --git a/pyjosa/josa.py b/pyjosa/josa.py
index af4711f..eafef0e 100644
--- a/pyjosa/josa.py
+++ b/pyjosa/josa.py
@@ -1,5 +1,5 @@
 from pyjosa.jonsung import has_jongsung
-
+from pyjosa.exceptions import JosaTypeException
 
 class Josa:
 
@@ -19,7 +19,7 @@ def get_josa(string, josa) -> str:
         elif (josa == '으로') or (josa == '로'):
             return '으로' if has_jongsung(string) else '로'
         else:
-            raise Exception("올바르지 않은 조사.")
+            raise JosaTypeException
 
     @staticmethod
     def get_full_string(string, josa) -> str:
@@ -37,4 +37,4 @@ def get_full_string(string, josa) -> str:
         elif (josa == '으로') or (josa == '로'):
             return string + '으로' if has_jongsung(string) else string + '로'
         else:
-            raise Exception("올바르지 않은 조사.")
+            raise JosaTypeException
diff --git a/setup.py b/setup.py
index e8d0842..d0411d9 100644
--- a/setup.py
+++ b/setup.py
@@ -2,7 +2,7 @@
 
 setup(
     name = 'pyjosa',
-    version = '0.0.9',
+    version = '0.0.10',
     description = '한국어 조사 처리 패키지',
     author = 'sehwan.kim',
     author_email = 'sehwan.kim@ingkle.com',