diff --git a/dblibj/src/main/scala/Cursor.scala b/dblibj/src/main/scala/Cursor.scala
index 97229f4..8d3f9a1 100644
--- a/dblibj/src/main/scala/Cursor.scala
+++ b/dblibj/src/main/scala/Cursor.scala
@@ -308,7 +308,7 @@ object Cursor {
           setLibErrorStatus(OCDB_INVALID_STMT(), state)
         }
         case Some(prepare) => {
-          if (addCursorMapWithPrepare(id, cname_, prepare, state)) {
+          if (!addCursorMapWithPrepare(id, cname_, prepare, state)) {
             setLibErrorStatus(OCDB_WARNING_PORTAL_EXISTS(), state)
           }
         }