diff --git a/Makefile b/Makefile
index 82819eb..4df13c3 100644
--- a/Makefile
+++ b/Makefile
@@ -121,7 +121,7 @@ $(BINODIR)/%.bin: $(IMAGEODIR)/%.out
 
 	@rm -f irom0_flash.bin irom1.bin
 
-	@python $(SDK_PATH)/tools/gen_appbin.py  $< $(SDK_PATH)/ld
+	@python2 $(SDK_PATH)/tools/gen_appbin.py  $< $(SDK_PATH)/ld
 
 	@mv eagle.app.flash.bin $(BIN_PATH)/$(BIN_NAME).ota
 
diff --git a/tools/gen_appbin.py b/tools/gen_appbin.py
index 9800314..f2829ba 100644
--- a/tools/gen_appbin.py
+++ b/tools/gen_appbin.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python2
 #
 # File	: gen_appbin.py
 # This file is part of Espressif's generate bin script.