diff --git a/bauh/gems/arch/pacman.py b/bauh/gems/arch/pacman.py
index 71e84d08..b7f2a09f 100644
--- a/bauh/gems/arch/pacman.py
+++ b/bauh/gems/arch/pacman.py
@@ -94,7 +94,7 @@ def install_as_process(pkgpath: str, root_password: str, aur: bool, pkgdir: str
     else:
         cmd = ['pacman', '-S', pkgpath, '--noconfirm']  # pkgpath = pkgname
 
-    return SystemProcess(new_root_subprocess(cmd, root_password, cwd=pkgdir))
+    return SystemProcess(new_root_subprocess(cmd, root_password, cwd=pkgdir), wrong_error_phrase='warning: downgrading package')
 
 
 def list_desktop_entries(pkgnames: Set[str]) -> List[str]: