diff --git a/src/include/ibase.h b/src/include/ibase.h
index 957afbb2d3..68ea5f2d8e 100644
--- a/src/include/ibase.h
+++ b/src/include/ibase.h
@@ -44,7 +44,7 @@
 #ifndef FIREBIRD_IBASE_H
 #define FIREBIRD_IBASE_H
 
-#define FB_API_VER 50
+#define FB_API_VER 60
 #define isc_version4
 
 #define  ISC_TRUE	1