explicit py3 in makefile

Makefile.in

@@ -12,7 +12,7 @@ all:
 	cp -r "$(PROGRAM)" __main__.py engine qtgui build
 	#Clean all pycache in build
 	cd build && find . -type d -name  "__pycache__" -exec rm -r {} +
-	python -m zipapp "build" --output="$(PROGRAM).bin" --python="/usr/bin/env python3"
+	python3 -m zipapp "build" --output="$(PROGRAM).bin" --python="/usr/bin/env python3"
 	rm build/compiledprefix.py
 
 	#nsm-data
@@ -20,7 +20,7 @@ all:
 	cp tools/nsm-data buildnsmdata/__main__.py
 	cp tools/nsmclient.py buildnsmdata/nsmclient.py
 	cd buildnsmdata && find . -type d -name  "__pycache__" -exec rm -r {} +
-	python -m zipapp "buildnsmdata" --output="nsm-data.bin" --python="/usr/bin/env python3"
+	python3 -m zipapp "buildnsmdata" --output="nsm-data.bin" --python="/usr/bin/env python3"
 
 clean:
 	rm -rf build/