diff --git a/drivers/net/wireless/ath/ath10k/pci.h b/drivers/net/wireless/ath/ath10k/pci.h
index 9854ad56b2dea..c76789d5de999 100644
--- a/drivers/net/wireless/ath/ath10k/pci.h
+++ b/drivers/net/wireless/ath/ath10k/pci.h
@@ -24,11 +24,6 @@
 #include "ce.h"
 #include "ahb.h"
 
-/*
- * maximum number of bytes that can be handled atomically by DiagRead/DiagWrite
- */
-#define DIAG_TRANSFER_LIMIT 2048
-
 /*
  * maximum number of bytes that can be
  * handled atomically by DiagRead/DiagWrite