diff --git a/install/linux/build-deb.py b/install/linux/build-deb.py
index 10d73be33..77d08dda2 100755
--- a/install/linux/build-deb.py
+++ b/install/linux/build-deb.py
@@ -69,6 +69,8 @@ def main():
         destination = root / "deb_dist" / f"dangerzone_{version}-{deb_ver}_{arch}.deb"
         shutil.move(item, destination)
         print(f"sudo dpkg -i {destination}")
+    else:
+        raise RuntimeError("Could not find the required .deb files")
 
 
 if __name__ == "__main__":