diff --git a/src/connector/odbc/CMakeLists.txt b/src/connector/odbc/CMakeLists.txt
index ea68ddd128f171c6a81f2671ebcf68ca0d550e62..b1e2b63d69849251e89ae82d92c0b303ececf2c0 100644
--- a/src/connector/odbc/CMakeLists.txt
+++ b/src/connector/odbc/CMakeLists.txt
@@ -40,7 +40,9 @@ IF (TD_WINDOWS_64)
   endif ()
   find_package(FLEX)
   if(NOT FLEX_FOUND)
-    message(FATAL_ERROR "you need to install flex first")
+    message(WARNING "you need to install flex first\n"
+                    "you may go to: https://github.com/lexxmark/winflexbison\n"
+                    "or download from: https://github.com/lexxmark/winflexbison/releases")
   else ()
     ADD_SUBDIRECTORY(src)
     ADD_SUBDIRECTORY(tools)