diff --git a/libc/stdio/stdio_ext.cpp b/libc/stdio/stdio_ext.cpp
index 310076a..f273d45 100644
--- a/libc/stdio/stdio_ext.cpp
+++ b/libc/stdio/stdio_ext.cpp
@@ -74,7 +74,7 @@
 }
 
 int __fsetlocking(FILE* fp, int type) {
-  int old_state = _EXT(fp)->_stdio_handles_locking ? FSETLOCKING_INTERNAL : FSETLOCKING_BYCALLER;
+  int old_state = _EXT(fp)->_caller_handles_locking ? FSETLOCKING_BYCALLER : FSETLOCKING_INTERNAL;
   if (type == FSETLOCKING_QUERY) {
     return old_state;
   }
@@ -84,7 +84,7 @@
     __libc_fatal("Bad type (%d) passed to __fsetlocking", type);
   }
 
-  _EXT(fp)->_stdio_handles_locking = (type == FSETLOCKING_INTERNAL);
+  _EXT(fp)->_caller_handles_locking = (type == FSETLOCKING_BYCALLER);
   return old_state;
 }