diff --git a/ext/mbstring/php_mbregex.c b/ext/mbstring/php_mbregex.c
index a9e464fa641..cf341d3599a 100644
--- a/ext/mbstring/php_mbregex.c
+++ b/ext/mbstring/php_mbregex.c
@@ -708,8 +708,10 @@ static void _php_mb_regex_ereg_exec(INTERNAL_FUNCTION_PARAMETERS, int icase)
 	string_len,
 	_php_mb_regex_mbctype2name(MBREX(current_mbctype))
 	)) {
-		zval_dtor(array);
-		array_init(array);
+		if (array != NULL) {
+			zval_dtor(array);
+			array_init(array);
+		}
 		RETURN_FALSE;
 	}
 
diff --git a/ext/mbstring/tests/bug73532.phpt b/ext/mbstring/tests/bug73532.phpt
new file mode 100644
index 00000000000..0bc838b0755
--- /dev/null
+++ b/ext/mbstring/tests/bug73532.phpt
@@ -0,0 +1,8 @@
+--TEST--
+Bug #73532 (Null pointer dereference in mb_eregi)
+--FILE--
+<?php
+var_dump(mb_eregi("a", "\xf5"));
+?>
+--EXPECTF--
+bool(false)