diff --git a/ext/readline/php_readline.h b/ext/readline/php_readline.h
index d825e19a11799..a9b56b6167df4 100644
--- a/ext/readline/php_readline.h
+++ b/ext/readline/php_readline.h
@@ -17,6 +17,12 @@
 #ifndef PHP_READLINE_H
 #define PHP_READLINE_H
 
+#if HAVE_LIBEDIT
+#define READLINE_LIB "libedit"
+#else
+#define READLINE_LIB "readline"
+#endif
+
 #if HAVE_LIBREADLINE || HAVE_LIBEDIT
 
 extern zend_module_entry readline_module_entry;
diff --git a/ext/readline/readline.c b/ext/readline/readline.c
index 544258eeca621..db2776fb27a9a 100644
--- a/ext/readline/readline.c
+++ b/ext/readline/readline.c
@@ -82,6 +82,9 @@ PHP_MINIT_FUNCTION(readline)
 #if HAVE_RL_CALLBACK_READ_CHAR
 	ZVAL_UNDEF(&_prepped_callback);
 #endif
+
+	register_readline_symbols(module_number);
+
 	return PHP_MINIT(cli_readline)(INIT_FUNC_ARGS_PASSTHRU);
 }
 
diff --git a/ext/readline/readline.stub.php b/ext/readline/readline.stub.php
index 804b02fde38c2..0e0db92af07c0 100644
--- a/ext/readline/readline.stub.php
+++ b/ext/readline/readline.stub.php
@@ -2,6 +2,12 @@
 
 /** @generate-class-entries */
 
+/**
+ * @var string
+ * @cvalue READLINE_LIB
+ */
+const READLINE_LIB = UNKNOWN;
+
 function readline(?string $prompt = null): string|false {}
 
 /** @param int|string|bool|null $value */
diff --git a/ext/readline/readline_arginfo.h b/ext/readline/readline_arginfo.h
index de539fd3310cc..4c64448d715c9 100644
--- a/ext/readline/readline_arginfo.h
+++ b/ext/readline/readline_arginfo.h
@@ -1,5 +1,5 @@
 /* This is a generated file, edit the .stub.php file instead.
- * Stub hash: 1839e2895847790ef3db4263d4940fa1bc956ff2 */
+ * Stub hash: 64d630be9ea75d584a4a999dd4d4c6bc769f5aca */
 
 ZEND_BEGIN_ARG_WITH_RETURN_TYPE_MASK_EX(arginfo_readline, 0, 0, MAY_BE_STRING|MAY_BE_FALSE)
 	ZEND_ARG_TYPE_INFO_WITH_DEFAULT_VALUE(0, prompt, IS_STRING, 1, "null")
@@ -114,3 +114,8 @@ static const zend_function_entry ext_functions[] = {
 #endif
 	ZEND_FE_END
 };
+
+static void register_readline_symbols(int module_number)
+{
+	REGISTER_STRING_CONSTANT("READLINE_LIB", READLINE_LIB, CONST_CS | CONST_PERSISTENT);
+}
diff --git a/ext/readline/readline_cli.c b/ext/readline/readline_cli.c
index 8bf5d23df75f7..84b261db34283 100644
--- a/ext/readline/readline_cli.c
+++ b/ext/readline/readline_cli.c
@@ -771,12 +771,6 @@ PHP_MINIT_FUNCTION(cli_readline)
 	ZEND_INIT_MODULE_GLOBALS(cli_readline, cli_readline_init_globals, NULL);
 	REGISTER_INI_ENTRIES();
 
-#if HAVE_LIBEDIT
-	REGISTER_STRING_CONSTANT("READLINE_LIB", "libedit", CONST_CS|CONST_PERSISTENT);
-#else
-	REGISTER_STRING_CONSTANT("READLINE_LIB", "readline", CONST_CS|CONST_PERSISTENT);
-#endif
-
 	GET_SHELL_CB(cb);
 	if (cb) {
 		cb->cli_shell_write = readline_shell_write;