diff --git a/v3/src/AsyncGetAction.cpp b/v3/src/AsyncGetAction.cpp
index 16d0508..30fd2d3 100644
--- a/v3/src/AsyncGetAction.cpp
+++ b/v3/src/AsyncGetAction.cpp
@@ -7,9 +7,9 @@ etcdv3::AsyncGetAction::AsyncGetAction(std::string const & key, KV::Stub* stub_,
 {
   RangeRequest get_request;
   get_request.set_key(key);
+  prefix = withPrefix;
   if(withPrefix)
   {
-    prefix = withPrefix;
     std::string range_end(key); 
     int ascii = (int)range_end[range_end.length()-1];
     range_end.back() = ascii+1;
@@ -38,6 +38,6 @@ etcdv3::AsyncRangeResponse etcdv3::AsyncGetAction::ParseResponse()
     range_resp.action = etcdv3::GET_ACTION;
     range_resp.isPrefix = prefix;
   }
-    
+
   return range_resp;
 }