diff --git a/src/syndicate/drivers/http_driver.nim b/src/syndicate/drivers/http_driver.nim
index 1f473b9..ac76e71 100644
--- a/src/syndicate/drivers/http_driver.nim
+++ b/src/syndicate/drivers/http_driver.nim
@@ -25,7 +25,7 @@ proc extractQuery(s: var string): Table[Symbol, seq[QueryValue]] =
   let start = succ skipUntil(s, '?')
   if start < s.len:
     var query = s[start..s.high]
-    s.setLen(start)
+    s.setLen(pred start)
     for key, val in uri.decodeQuery(query):
       var list = result.getOrDefault(Symbol key)
       list.add QueryValue(orKind: QueryValueKind.string, string: val)