diff --git a/Makefile b/Makefile
index 542fa74..119d326 100644
--- a/Makefile
+++ b/Makefile
@@ -55,7 +55,7 @@ install.desktop:
 	desktop-file-install --set-key=Exec --set-value $(EMMENTAL_BIN)/emmental \
 		--set-key=Icon --set-value=$(EMMENTAL_LIB)/emmental.svg \
 		--rebuild-mime-info-cache \
-		--dir=$(EMMENTAL_SHARE)/applications emmental.desktop
+		--dir=$(EMMENTAL_SHARE)/applications com.nowheycreamery.emmental.desktop
 
 .PHONY: install
 install: emmental.gresource mpris2 install.app install.icons install.desktop
@@ -65,9 +65,9 @@ install: emmental.gresource mpris2 install.app install.icons install.desktop
 
 .PHONY: uninstall
 uninstall:
-	rm -f ${PREFIX}/share/applications/com.nowheycreamery.emmental.desktop
-	rm -f ${PREFIX}/bin/emmental
-	rm -rf ${PREFIX}/lib/emmental/
+	rm -f ${EMMENTAL_SHARE}/applications/com.nowheycreamery.emmental.desktop
+	rm -f ${EMMENTAL_BIN}/emmental
+	rm -rf ${EMMENTAL_LIB}/emmental/
 
 .PHONY: pkgbuild.pkgver
 pkgbuild.pkgver: