diff --git a/artiq/firmware/bootloader/Makefile b/artiq/firmware/bootloader/Makefile
index d5a34f5ba..482aa3291 100644
--- a/artiq/firmware/bootloader/Makefile
+++ b/artiq/firmware/bootloader/Makefile
@@ -15,4 +15,3 @@ bootloader.elf: $(RUSTOUT)/libbootloader.a
 %.bin: %.elf
 	$(objcopy) -O binary
 	$(MSCIMG) $@ --little
-	objcopy -I binary -O binary --reverse-bytes=4 $@
diff --git a/artiq/firmware/runtime/Makefile b/artiq/firmware/runtime/Makefile
index 766804e68..24ac19741 100644
--- a/artiq/firmware/runtime/Makefile
+++ b/artiq/firmware/runtime/Makefile
@@ -28,4 +28,3 @@ ksupport_data.o: ../ksupport/ksupport.elf
 
 %.fbi: %.bin
 	$(mscimg) -f --little
-	objcopy -I binary -O binary --reverse-bytes=4 $@
diff --git a/artiq/firmware/satman/Makefile b/artiq/firmware/satman/Makefile
index 3d6974cf1..59f0f78f6 100644
--- a/artiq/firmware/satman/Makefile
+++ b/artiq/firmware/satman/Makefile
@@ -19,4 +19,3 @@ satman.elf: $(RUSTOUT)/libsatman.a
 
 %.fbi: %.bin
 	$(mscimg) -f --little
-	objcopy -I binary -O binary --reverse-bytes=4 $@