diff --git a/pywikidiff2/pywikidiff2.cpp b/pywikidiff2/pywikidiff2.cpp
index b8789c5..2a6c7b8 100644
--- a/pywikidiff2/pywikidiff2.cpp
+++ b/pywikidiff2/pywikidiff2.cpp
@@ -99,7 +99,7 @@ static PyObject *pywikidiff2_inline_json_diff(pywikidiff2Obj *self, PyObject *ar
 				   kwdlist,
 				   &text1,
 				   &text2,
-				   numContextLines
+				   &numContextLines
 				   )){
     PyErr_SetString(PyExc_ValueError, "Error in arguments to inline_json_diff");
     return NULL;