diff --git a/UPGRADING.INTERNALS b/UPGRADING.INTERNALS
index 6e30418e06209..5aca4f5e23e74 100644
--- a/UPGRADING.INTERNALS
+++ b/UPGRADING.INTERNALS
@@ -67,6 +67,7 @@ PHP 8.4 INTERNALS UPGRADE NOTES
    - Symbol MISSING_FCLOSE_DECL and M4 macro PHP_MISSING_FCLOSE_DECL removed.
    - Symbol HAVE_BSD_ICONV has been removed.
    - Symbol ZEND_FIBER_ASM has been removed.
+   - Symbols HAVE_DLOPEN and HAVE_DLSYM have been removed.
    - M4 macro PHP_DEFINE (atomic includes) removed (use AC_DEFINE and config.h).
    - M4 macro PHP_WITH_SHARED has been removed (use PHP_ARG_WITH).
    - M4 macro PHP_STRUCT_FLOCK has been removed (use AC_CHECK_TYPES).
diff --git a/configure.ac b/configure.ac
index bdf5183d1c173..91ba63f5ad395 100644
--- a/configure.ac
+++ b/configure.ac
@@ -362,11 +362,8 @@ PHP_CHECK_FUNC(socketpair, socket, network)
 PHP_CHECK_FUNC(htonl, socket, network)
 PHP_CHECK_FUNC(gethostname, nsl, network)
 PHP_CHECK_FUNC(gethostbyaddr, nsl, network)
-PHP_CHECK_FUNC(dlopen, dl)
-PHP_CHECK_FUNC(dlsym, dl)
-if test "$ac_cv_func_dlopen" = "yes"; then
-  AC_DEFINE(HAVE_LIBDL, 1, [ ])
-fi
+AC_SEARCH_LIBS([dlopen], [dl],
+  [AC_DEFINE([HAVE_LIBDL], [1], [Define to 1 if the dl library is available.])])
 AC_CHECK_LIB(m, sin)
 
 case $host_alias in