diff --git a/pyzbar/wrapper.py b/pyzbar/wrapper.py
index b9f333a..997390a 100644
--- a/pyzbar/wrapper.py
+++ b/pyzbar/wrapper.py
@@ -274,7 +274,7 @@ def zbar_function(fname, restype, *args):
 try:
     zbar_symbol_get_orientation = zbar_function(
         'zbar_symbol_get_orientation',
-        c_uint,
+        c_int,
         POINTER(zbar_symbol)
     )
 except AttributeError: