diff --git a/htl/pt-internal.h b/htl/pt-internal.h
index faf4afbec0..c3b1d75bb0 100644
--- a/htl/pt-internal.h
+++ b/htl/pt-internal.h
@@ -1,4 +1,4 @@
-/* Internal defenitions for pthreads library.
+/* Internal definitions for pthreads library.
    Copyright (C) 2000-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
diff --git a/sysdeps/generic/pty-private.h b/sysdeps/generic/pty-private.h
index df6802b9de..411cb95dd2 100644
--- a/sysdeps/generic/pty-private.h
+++ b/sysdeps/generic/pty-private.h
@@ -1,4 +1,4 @@
-/* Internal defenitions and declarations for pseudo terminal functions.
+/* Internal definitions and declarations for pseudo terminal functions.
    Copyright (C) 1998-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Zack Weinberg <zack@rabi.phys.columbia.edu>, 1998.