diff --git a/pywikidiff2/pywikidiff2.cpp b/pywikidiff2/pywikidiff2.cpp
index 7d1ab54..d50112f 100644
--- a/pywikidiff2/pywikidiff2.cpp
+++ b/pywikidiff2/pywikidiff2.cpp
@@ -97,11 +97,13 @@ static Wikidiff2::String char_to_string(char* cstr){
   return str;
 }
 
-static Wikidiff2::String wikidiff2_inline_json_diff(pywikidiff2Obj *self, Wikidiff2::String text1String, Wikidiff2::String text2String){
-  Wikidiff2 wikidiff2( *(&self->config));  
+static Wikidiff2::String wikidiff2_inline_json_diff(pywikidiff2Obj *self, char* text1, char* text2){
+  Wikidiff2::String str1(text1, strlen(text1));
+  Wikidiff2::String str2(text2, strlen(text2));
+  Wikidiff2 wikidiff2( *(&self->config));
   InlineJSONFormatter formatter;
   wikidiff2.addFormatter(formatter);
-  wikidiff2.execute(text1String, text2String);
+  wikidiff2.execute(str1, str2);
   Wikidiff2::String ret = formatter.getResult().str();
   return ret;
 } 
@@ -155,11 +157,32 @@ static PyObject *pywikidiff2_inline_json_diff_sequence(pywikidiff2Obj *self, PyO
   }
   PyObject *result_list;
   result_list = PyList_New(list_size);
+  char* last_text;
+  char* text;
+  size_t last_text_len;
+  size_t text_len;
   for(i = 1; i<list_size+1; ++i){
-    Wikidiff2::String diff_str = wikidiff2_inline_json_diff(self, input_texts_str[i-1], input_texts_str[i]);
+    if(i == 1){
+      last_text_len = strlen(input_texts_str[i-1]);
+      text_len = strlen(input_texts_str[i]);
+      last_text = new char[last_text_len];
+      text = new char[text_len];
+      strcpy(last_text, input_texts_str[i-1]);
+      strcpy(text, input_texts_str[i]);
+    } else {
+      delete last_text;
+      last_text = text;
+      last_text_len = text_len;
+      text_len = strlen(input_texts_str[i]);
+      text = new char[text_len];
+      strcpy(text, input_texts_str[i]);
+    }
+    Wikidiff2::String diff_str = wikidiff2_inline_json_diff(self, last_text, text);
     PyObject* py_diff = PyUnicode_FromFormat("%s",diff_str.c_str());
     PyList_SetItem(result_list, i-1, py_diff);
   }
+  delete last_text;
+  delete text;
   return result_list;
 }