diff --git a/keyboards/kinesis/kint36/rules.mk b/keyboards/kinesis/kint36/rules.mk
index cf58cb913452..4f33583124d3 100644
--- a/keyboards/kinesis/kint36/rules.mk
+++ b/keyboards/kinesis/kint36/rules.mk
@@ -4,3 +4,6 @@ MCU   = MK66F18
 # Debounce eagerly (report change immediately), keep per-key timers. We can use
 # this because the kinT does not have to deal with noise.
 DEBOUNCE_TYPE = sym_eager_pk
+
+#Specify firmware format that is copied to root qmk_firmware folder
+FIRMWARE_FORMAT = hex
diff --git a/keyboards/kinesis/kint41/rules.mk b/keyboards/kinesis/kint41/rules.mk
index 4d77da4271b2..2681ff6724a8 100644
--- a/keyboards/kinesis/kint41/rules.mk
+++ b/keyboards/kinesis/kint41/rules.mk
@@ -10,3 +10,6 @@ ARMV = 7
 # this because the Cherry MX keyswitches on the Kinesis only produce noise while
 # pressed.
 DEBOUNCE_TYPE = sym_eager_pk
+
+#Specify firmware format that is copied to root qmk_firmware folder
+FIRMWARE_FORMAT = hex