Index: trunk/const_string.c
===================================================================
--- trunk/const_string.c	(revision 562)
+++ trunk/const_string.c	(revision 821)
@@ -64,4 +64,6 @@
 #if PHP_MAJOR_VERSION >= 6
 #	include "const_string_opcodes_php6.x.h"
+#elif defined(ZEND_ENGINE_2_4)
+#	include "const_string_opcodes_php5.4.h"
 #elif defined(ZEND_ENGINE_2_1)
 #	include "const_string_opcodes_php5.1.h"