diff --git a/ext/mbstring/mbstring.c b/ext/mbstring/mbstring.c
index dec565707fa78..1d5c27a2a3815 100644
--- a/ext/mbstring/mbstring.c
+++ b/ext/mbstring/mbstring.c
@@ -1165,8 +1165,8 @@ PHP_RSHUTDOWN_FUNCTION(mbstring)
 	MBSTRG(outconv_state) = 0;
 
 	if (MBSTRG(all_encodings_list)) {
-		GC_DELREF(MBSTRG(all_encodings_list));
-		zend_array_destroy(MBSTRG(all_encodings_list));
+		/* must be *array* release to remove from GC root buffer and free the hashtable itself */
+		zend_array_release(MBSTRG(all_encodings_list));
 		MBSTRG(all_encodings_list) = NULL;
 	}
 
diff --git a/ext/mbstring/tests/gh19397.phpt b/ext/mbstring/tests/gh19397.phpt
new file mode 100644
index 0000000000000..e6e07b161c089
--- /dev/null
+++ b/ext/mbstring/tests/gh19397.phpt
@@ -0,0 +1,11 @@
+--TEST--
+GH-19397 (mb_list_encodings() can cause crashes on shutdown)
+--EXTENSIONS--
+mbstring
+--FILE--
+<?php
+$doNotDeleteThisVariableAssignment = mb_list_encodings();
+var_dump(count($doNotDeleteThisVariableAssignment) > 0);
+?>
+--EXPECT--
+bool(true)