diff --git a/include/linux/blktrace_api.h b/include/linux/blktrace_api.h
index c7ec31d..7e4350e 100644
--- a/include/linux/blktrace_api.h
+++ b/include/linux/blktrace_api.h
@@ -218,7 +218,7 @@
 
 #endif /* CONFIG_BLK_DEV_IO_TRACE */
 
-#ifdef CONFIG_EVENT_TRACING
+#if defined(CONFIG_EVENT_TRACING) && defined(CONFIG_BLOCK)
 
 static inline int blk_cmd_buf_len(struct request *rq)
 {
@@ -229,7 +229,7 @@
 extern void blk_fill_rwbs(char *rwbs, u32 rw, int bytes);
 extern void blk_fill_rwbs_rq(char *rwbs, struct request *rq);
 
-#endif /* CONFIG_EVENT_TRACING */
+#endif /* CONFIG_EVENT_TRACING && CONFIG_BLOCK */
 
 #endif /* __KERNEL__ */
 #endif