diff --git a/BaseTools/Source/Python/AutoGen/GenMake.py b/BaseTools/Source/Python/AutoGen/GenMake.py
index 475b794fe8..4b2902f473 100644
--- a/BaseTools/Source/Python/AutoGen/GenMake.py
+++ b/BaseTools/Source/Python/AutoGen/GenMake.py
@@ -597,10 +597,11 @@ cleanlib:
         while not found and os.sep in package_rel_dir:
             index = package_rel_dir.index(os.sep)
             current_dir = mws.join(current_dir, package_rel_dir[:index])
-            for fl in os.listdir(current_dir):
-                if fl.endswith('.dec'):
-                    found = True
-                    break
+            if os.path.exists(current_dir):
+                for fl in os.listdir(current_dir):
+                    if fl.endswith('.dec'):
+                        found = True
+                        break
             package_rel_dir = package_rel_dir[index + 1:]
 
         MakefileTemplateDict = {