diff --git a/src/atomic-xr/runtime.nu b/src/atomic-xr/runtime.nu
index fb97705..1a96dc4 100644
--- a/src/atomic-xr/runtime.nu
+++ b/src/atomic-xr/runtime.nu
@@ -80,7 +80,7 @@ def ensure-installed [
     }
 
     if ($missing_packages | is-not-empty) {
-        if (which dnf | length) == 0 {
+        if (which rpm-ostree | length) > 0 {
             rpm-ostree install ...$missing_packages
 
             job spawn {
@@ -90,8 +90,13 @@ def ensure-installed [
                 }
             }
             null
-        } else {
+        } else if (which dnf | length) > 0 {
             pkexec dnf install ...$missing_packages
+        } else {
+            error make {
+                msg: "No supported package manager found"
+                help: "This operation is only supported on Fedora-based operating systems. If this is a Fedora-based OS, please submit a bug report."
+            }
         }
     }
 }