diff --git a/GNUmakefile b/GNUmakefile
index f873057..d653d9c 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -16,10 +16,10 @@ install:
 	$(GO) install $(GOFLAGS) .
 else
 install: all
-	install -m755 $(PROG) $(DESTDIR)$(PREFIX)/$(BIN)/$(PROG)
-	install -m644 doc/$(PROG).1 $(DESTDIR)$(MAN)/man1/$(PROG).1
+	install -Dm755 $(PROG) $(DESTDIR)$(PREFIX)/$(BIN)/$(PROG)
+	install -Dm644 doc/$(PROG).1 $(DESTDIR)$(MAN)/man1/$(PROG).1
 # completions need to go in one specific place :)
-	install -m644 completions/bash.bash $(DESTDIR)$(PREFIX)/$(SHARE)/bash-completion/completions/$(PROG)
-	install -m644 completions/fish.fish $(DESTDIR)$(PREFIX)/$(SHARE)/fish/vendor_completions.d/$(PROG).fish
-	install -m644 completions/zsh.zsh $(DESTDIR)$(PREFIX)/$(SHARE)/zsh/site-functions/_$(PROG)
+	install -Dm644 completions/bash.bash $(DESTDIR)$(PREFIX)/$(SHARE)/bash-completion/completions/$(PROG)
+	install -Dm644 completions/fish.fish $(DESTDIR)$(PREFIX)/$(SHARE)/fish/vendor_completions.d/$(PROG).fish
+	install -Dm644 completions/zsh.zsh $(DESTDIR)$(PREFIX)/$(SHARE)/zsh/site-functions/_$(PROG)
 endif
diff --git a/Makefile b/Makefile
index f0e3f81..49cc06f 100644
--- a/Makefile
+++ b/Makefile
@@ -8,9 +8,9 @@ EXE := $(PROG)
 ## install: installs awl
 .PHONY: install
 install: all
-	install -m755 $(PROG) $(DESTDIR)$(PREFIX)/$(BIN)/$(PROG)
-	install -m644 doc/$(PROG).1 $(DESTDIR)$(MAN)/man1/$(PROG).1
+	install -Dm755 $(PROG) $(DESTDIR)$(PREFIX)/$(BIN)/$(PROG)
+	install -Dm644 doc/$(PROG).1 $(DESTDIR)$(MAN)/man1/$(PROG).1
 # completions need to go in one specific place :)
-	install -m644 completions/bash.bash $(DESTDIR)$(PREFIX)$(SHARE)/bash-completion/completions/$(PROG)
-	install -m644 completions/fish.fish $(DESTDIR)$(PREFIX)$(SHARE)/fish/vendor_completions.d/$(PROG).fish
-	install -m644 completions/zsh.zsh $(DESTDIR)$(PREFIX)$(SHARE)/zsh/site-functions/_$(PROG)
+	install -Dm644 completions/bash.bash $(DESTDIR)$(PREFIX)$(SHARE)/bash-completion/completions/$(PROG)
+	install -Dm644 completions/fish.fish $(DESTDIR)$(PREFIX)$(SHARE)/fish/vendor_completions.d/$(PROG).fish
+	install -Dm644 completions/zsh.zsh $(DESTDIR)$(PREFIX)$(SHARE)/zsh/site-functions/_$(PROG)