diff --git a/tiny-json.h b/tiny-json.h
index 2ad97ec..2b527e7 100644
--- a/tiny-json.h
+++ b/tiny-json.h
@@ -140,14 +140,14 @@ static inline bool json_getBoolean( json_t const* property ) {
   * @param property A valid handler of a json object. Its type must be JSON_INTEGER.
   * @return The value stdint. */
 static inline int64_t json_getInteger( json_t const* property ) {
-    return atoll( property->u.value );
+  return strtoll( property->u.value,(char**)NULL, 10);
 }
 
 /** Get the value of a json real property.
   * @param property A valid handler of a json object. Its type must be JSON_REAL.
   * @return The value. */
 static inline double json_getReal( json_t const* property ) {
-    return atof( property->u.value );
+  return strtod( property->u.value,(char**)NULL );
 }