diff --git a/target/linux/ipq40xx/image/generic.mk b/target/linux/ipq40xx/image/generic.mk
index d79fda3156a..1757684a7c1 100644
--- a/target/linux/ipq40xx/image/generic.mk
+++ b/target/linux/ipq40xx/image/generic.mk
@@ -742,7 +742,7 @@ define Device/linksys_whw01
 	DEVICE_VENDOR := Linksys
 	DEVICE_MODEL := WHW01
 	KERNEL_SIZE := 6144k
-	IMAGE_SIZE := 75776K
+	IMAGE_SIZE := 75776k
 	SOC := qcom-ipq4018
 	BLOCKSIZE := 128k
 	PAGESIZE := 2048