diff --git a/README.md b/README.md
index e37e1e0f..6bebab31 100644
--- a/README.md
+++ b/README.md
@@ -42,7 +42,7 @@ it should display messages about any broken or outdated external data.
 
 ### Installation
 
-This tool itself is available in flatpak format from Flathub. Install with
+This tool itself is available in Flatpak format from Flathub. Install with
 
 ```bash
 flatpak install --from https://dl.flathub.org/repo/appstream/org.flathub.flatpak-external-data-checker.flatpakref
@@ -50,6 +50,12 @@ flatpak install --from https://dl.flathub.org/repo/appstream/org.flathub.flatpak
 
 And run with
 
+```bash
+flatpak run org.flathub.flatpak-external-data-checker MANIFEST_DIR/MANIFEST_FILE
+```
+
+If the manifest is not in your home directory, you need to punch a sandbox hole for it:
+
 ```bash
 flatpak run --filesystem=MANIFEST_DIR org.flathub.flatpak-external-data-checker MANIFEST_DIR/MANIFEST_FILE
 ```