diff --git a/Misc/NEWS.d/next/Build/2025-06-14-10-32-11.gh-issue-135497.ajlV4F.rst b/Misc/NEWS.d/next/Build/2025-06-14-10-32-11.gh-issue-135497.ajlV4F.rst
new file mode 100644
index 00000000000000..c84663b14668d6
--- /dev/null
+++ b/Misc/NEWS.d/next/Build/2025-06-14-10-32-11.gh-issue-135497.ajlV4F.rst
@@ -0,0 +1 @@
+Fix the detection of ``MAXLOGNAME`` in the ``configure.ac`` script.
diff --git a/Misc/NEWS.d/next/Library/2025-06-14-14-19-13.gh-issue-135497.1pzwdA.rst b/Misc/NEWS.d/next/Library/2025-06-14-14-19-13.gh-issue-135497.1pzwdA.rst
new file mode 100644
index 00000000000000..d3e81de9dbfd34
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2025-06-14-14-19-13.gh-issue-135497.1pzwdA.rst
@@ -0,0 +1 @@
+Fix :func:`os.getlogin` failing for longer usernames on BSD-based platforms.
diff --git a/configure b/configure
index 1fe72c1934f42e..015f2e7cac10bc 100755
--- a/configure
+++ b/configure
@@ -23849,7 +23849,7 @@ fi
 
 
 
-ac_fn_check_decl "$LINENO" "MAXLOGNAME" "ac_cv_have_decl_MAXLOGNAME" "#include <sys/params.h>
+ac_fn_check_decl "$LINENO" "MAXLOGNAME" "ac_cv_have_decl_MAXLOGNAME" "#include <sys/param.h>
 " "$ac_c_undeclared_builtin_options" "CFLAGS"
 if test "x$ac_cv_have_decl_MAXLOGNAME" = xyes
 then :
diff --git a/configure.ac b/configure.ac
index d10a0368286c3f..fb48f39d336013 100644
--- a/configure.ac
+++ b/configure.ac
@@ -5542,7 +5542,7 @@ AC_CHECK_DECL([MAXLOGNAME],
               [AC_DEFINE([HAVE_MAXLOGNAME], [1],
                          [Define if you have the 'MAXLOGNAME' constant.])],
               [],
-              [@%:@include <sys/params.h>])
+              [@%:@include <sys/param.h>])
 
 AC_CHECK_DECLS([UT_NAMESIZE],
               [AC_DEFINE([HAVE_UT_NAMESIZE], [1],