1 files changed, 1 insertions, 1 deletions

diff --git a/platforms/arm_atsam/flash.mk b/platforms/arm_atsam/flash.mk
index 444ba77f5..f31d4b4d9 100644
--- a/platforms/arm_atsam/flash.mk
+++ b/platforms/arm_atsam/flash.mk
@@ -5,7 +5,7 @@
 
 flash: bin
 ifneq ($(strip $(PROGRAM_CMD)),)
-        $(PROGRAM_CMD)
+        $(UNSYNC_OUTPUT_CMD) && $(PROGRAM_CMD)
 else
         $(PRINT_OK); $(SILENT) || printf "$(MSG_FLASH_ARCH)"
 endif