diff --git a/target/linux/lantiq/xrx200/base-files/etc/hotplug.d/firmware/12-ath9k-eeprom b/target/linux/lantiq/xrx200/base-files/etc/hotplug.d/firmware/12-ath9k-eeprom
index e4683af960a..c6bacb8d3c1 100644
--- a/target/linux/lantiq/xrx200/base-files/etc/hotplug.d/firmware/12-ath9k-eeprom
+++ b/target/linux/lantiq/xrx200/base-files/etc/hotplug.d/firmware/12-ath9k-eeprom
@@ -25,8 +25,8 @@ case "$FIRMWARE" in
 				;;
 			avm,fritz7412|\
 			avm,fritz7430)
-				/usr/bin/fritz_cal_extract -i 1 -s 0x1e000 -e 0x207 -l 4096 -o /lib/firmware/$FIRMWARE $(find_mtd_chardev "urlader") || \
-				/usr/bin/fritz_cal_extract -i 1 -s 0x1e800 -e 0x207 -l 4096 -o /lib/firmware/$FIRMWARE $(find_mtd_chardev "urlader")
+				/usr/bin/fritz_cal_extract -i 1 -s 0x1e000 -e 0x207 -l 5120 -o /lib/firmware/$FIRMWARE $(find_mtd_chardev "urlader") || \
+				/usr/bin/fritz_cal_extract -i 1 -s 0x1e800 -e 0x207 -l 5120 -o /lib/firmware/$FIRMWARE $(find_mtd_chardev "urlader")
 				;;
 			bt,homehub-v5a)
 				caldata_extract_ubi "caldata" 0x1000 0x1000