diff --git a/awtk_config_common.py b/awtk_config_common.py
index 2aa7535b4..1e0500960 100644
--- a/awtk_config_common.py
+++ b/awtk_config_common.py
@@ -104,12 +104,12 @@ def joinPath(root, subdir):
     sdl_path = "/opt/homebrew/Cellar/sdl2/" 
     if not os.path.exists(sdl_path) :
         # Compatible with old systems
-        sdl_path = '/usr/local/Cellar/sdl2'
+        sdl_path = '/usr/local/Cellar/sdl2/'
     sdl_versions = os.listdir(sdl_path)
     if len(sdl_versions)==0:
         print("Can not find the SDL version")
         exit(-1)
-    sdl_lib = sdl_path+ sdl_versions[0]+"/lib"
+    sdl_lib = sdl_path + sdl_versions[0] + "/lib"
 
     TOOLS_NAME = ''
     OS_FLAGS = '-Wall -Wno-unused-function -fPIC -DWITHOUT_GLAD=1 '