diff --git a/libc/tools/gensyscalls.py b/libc/tools/gensyscalls.py
index b4aa06c..329184f 100755
--- a/libc/tools/gensyscalls.py
+++ b/libc/tools/gensyscalls.py
@@ -674,6 +674,7 @@
 
 logging.basicConfig(level=logging.INFO)
 
-state = State()
-state.process_file(os.path.join(bionic_libc_root, "SYSCALLS.TXT"))
-state.regenerate()
+if __name__ == "__main__":
+    state = State()
+    state.process_file(os.path.join(bionic_libc_root, "SYSCALLS.TXT"))
+    state.regenerate()