diff --git a/ChangeLog b/ChangeLog
index e3ed4e4..c49a99b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -5,6 +5,7 @@ Ini Settings Changes
 
 ChangeLog
 ========
+ * bug fix for compatibility with Zend Optimizer and other non-cachable
  * #55: segv php tokenizer on certain special situation
  * new: xcache.stat = On
  * could not show module info in admin page when XCache is the last module
diff --git a/NEWS b/NEWS
index 40962d3..2480584 100644
--- a/NEWS
+++ b/NEWS
@@ -1,5 +1,6 @@
 2.0.0 2007-?-?
 ========
+ * bug fix for compatibility with Zend Optimizer and other non-cachable
  * a rare segv bug with token_get_all
  * compatibility fix for apache 1.x, which init XCache module correctly
  * full Zend Optimizer compatibility
diff --git a/xcache.c b/xcache.c
index 9039df2..97f4d28 100644
--- a/xcache.c
+++ b/xcache.c
@@ -994,6 +994,9 @@ static zend_op_array *xc_compile_php(xc_entry_data_php_t *php, zend_file_handle
 
 	if (!XG(initial_compile_file_called)) {
 		xc_sandbox_free(&sandbox, XC_InstallNoBinding TSRMLS_CC);
+		ENTER_LOCK(cache) {
+			cache->compiling = 0;
+		} LEAVE_LOCK(cache);
 		return op_array;
 	}