diff --git a/scripts/gen_build_prop.py b/scripts/gen_build_prop.py
index 9ea56cb..13d4506 100644
--- a/scripts/gen_build_prop.py
+++ b/scripts/gen_build_prop.py
@@ -237,7 +237,7 @@
 
   print(f"# Do not try to parse description or thumbprint")
   print(f"ro.build.description?={config['BuildDesc']}")
-  if "build_thumbprint" in config:
+  if "BuildThumbprint" in config:
     print(f"ro.build.thumbprint={config['BuildThumbprint']}")
 
   print(f"# end build properties")