diff --git a/gui-wm/caelestia-shell/caelestia-shell-9999.ebuild b/gui-wm/caelestia-shell/caelestia-shell-9999.ebuild
index 680baff..404f71d 100644
--- a/gui-wm/caelestia-shell/caelestia-shell-9999.ebuild
+++ b/gui-wm/caelestia-shell/caelestia-shell-9999.ebuild
@@ -56,7 +56,7 @@ BDEPEND="dev-vcs/git
 src_compile() {
     cd ${S}
 
-    cmake -B build -G Ninja -DCMAKE_BUILD_TYPE=Release
+    cmake -B build -G Ninja -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/
     cmake --build build
 }