diff --git a/source-builder/sb/config.py b/source-builder/sb/config.py
index d25d02b..fda66ed 100644
--- a/source-builder/sb/config.py
+++ b/source-builder/sb/config.py
@@ -466,7 +466,7 @@ class file:
                 #
                 if ifls[0] == '==':
                     istrue = True
-                elif ifls[0] == '==':
+                elif ifls[0] == '!=':
                     istrue = False
                 else:
                     istrue = check_bool(ifls[0])