diff --git a/Makefile b/Makefile
index 882cc8c..1019df7 100644
--- a/Makefile
+++ b/Makefile
@@ -39,10 +39,10 @@ POWER_PLAN_INSTALL_SRCDIR="$(RES_DIR)/plans/"
 SCRIPT_INSTALL_TARGET="$(DESTDIR)/$(PREFIX)/bin/$(NAME)"
 DOC_INSTALL_TARGET="$(DESTDIR)/$(PREFIX)/share/doc/$(NAME)/README.md"
 LICENSE_INSTALL_TARGET="$(DESTDIR)/$(PREFIX)/share/doc/$(NAME)/LICENSE"
-BASH_INSTALL_TARGET="$(DESTDIR)/$(SYSTEM_PREFIX)/share/bash-completion/completions/$(NAME)"
-ZSH_INSTALL_TARGET="$(DESTDIR)/$(SYSTEM_PREFIX)/share/zsh/site-functions/_$(NAME)"
-FISH_INSTALL_TARGET="$(DESTDIR)/$(SYSTEM_PREFIX)/share/fish/completions/$(NAME).fish"
-UDEV_INSTALL_TARGET="$(DESTDIR)/$(SYSTEM_PREFIX)/lib/udev/rules.d/99-$(NAME).rules"
+BASH_INSTALL_TARGET="$(DESTDIR)/$(PREFIX)/share/bash-completion/completions/$(NAME)"
+ZSH_INSTALL_TARGET="$(DESTDIR)/$(PREFIX)/share/zsh/site-functions/_$(NAME)"
+FISH_INSTALL_TARGET="$(DESTDIR)/$(PREFIX)/share/fish/completions/$(NAME).fish"
+UDEV_INSTALL_TARGET="$(DESTDIR)/$(PREFIX)/lib/udev/rules.d/99-$(NAME).rules"
 SYSTEMD_SERVICE_AT_INSTALL_TARGET="$(DESTDIR)/$(SYSTEM_PREFIX)/lib/systemd/system/$(NAME)@.service"
 SYSTEMD_SERVICE_SLEEP_INSTALL_TARGET="$(DESTDIR)/$(SYSTEM_PREFIX)/lib/systemd/system/$(NAME)-sleep.service"