diff --git a/Mac/IDLE/Makefile.in b/Mac/IDLE/Makefile.in
index 1fd30a7d17b..496c139e721 100644
--- a/Mac/IDLE/Makefile.in
+++ b/Mac/IDLE/Makefile.in
@@ -29,10 +29,10 @@ all: IDLE.app
 install: IDLE.app $(srcdir)/config-main.def $(srcdir)/config-extensions.def
 	test -d "$(DESTDIR)$(PYTHONAPPSDIR)" || mkdir -p "$(DESTDIR)$(PYTHONAPPSDIR)"
 	-test -d "$(DESTDIR)$(PYTHONAPPSDIR)/IDLE.app" && rm -r "$(DESTDIR)$(PYTHONAPPSDIR)/IDLE.app"
-	cp -PR IDLE.app "$(DESTDIR)$(PYTHONAPPSDIR)"
+	/bin/cp -PR IDLE.app "$(DESTDIR)$(PYTHONAPPSDIR)"
 	touch "$(DESTDIR)$(PYTHONAPPSDIR)/IDLE.app"
-	cp $(srcdir)/config-main.def "$(DESTDIR)$(prefix)/lib/python$(VERSION)/idlelib/config-main.def"
-	cp $(srcdir)/config-extensions.def "$(DESTDIR)$(prefix)/lib/python$(VERSION)/idlelib/config-extensions.def"
+	/bin/cp $(srcdir)/config-main.def "$(DESTDIR)$(prefix)/lib/python$(VERSION)/idlelib/config-main.def"
+	/bin/cp $(srcdir)/config-extensions.def "$(DESTDIR)$(prefix)/lib/python$(VERSION)/idlelib/config-extensions.def"
 
 clean:
 	rm -rf IDLE.app
diff --git a/Mac/PythonLauncher/Makefile.in b/Mac/PythonLauncher/Makefile.in
index 91a26d410d9..d61e1aa59fb 100644
--- a/Mac/PythonLauncher/Makefile.in
+++ b/Mac/PythonLauncher/Makefile.in
@@ -29,7 +29,7 @@ all: Python\ Launcher.app
 install: Python\ Launcher.app
 	test -d "$(DESTDIR)$(PYTHONAPPSDIR)" || mkdir -p "$(DESTDIR)$(PYTHONAPPSDIR)"
 	-test -d "$(DESTDIR)$(PYTHONAPPSDIR)/Python Launcher.app" && rm -r "$(DESTDIR)$(PYTHONAPPSDIR)/Python Launcher.app"
-	cp -r "Python Launcher.app" "$(DESTDIR)$(PYTHONAPPSDIR)"
+	/bin/cp -r "Python Launcher.app" "$(DESTDIR)$(PYTHONAPPSDIR)"
 	touch "$(DESTDIR)$(PYTHONAPPSDIR)/Python Launcher.app"
 
 clean: