diff --git a/configure.in b/configure.in
index ba3451c92a5..46a779e8cfb 100644
--- a/configure.in
+++ b/configure.in
@@ -1108,7 +1108,7 @@ PHP_ADD_SOURCES(Zend, \
     zend_ini.c zend_qsort.c zend_multibyte.c)
 
 if test -r "$abs_srcdir/Zend/zend_objects.c"; then
-  PHP_ADD_SOURCES(Zend, zend_objects.c zend_object_handlers.c zend_objects_API.c)
+  PHP_ADD_SOURCES(Zend, zend_objects.c zend_object_handlers.c zend_objects_API.c zend_mm.c)
 fi
 
 dnl Selectively disable optimization due to high RAM usage during