diff --git a/src/modules/dummypython/main.py b/src/modules/dummypython/main.py
index 65621dd1d1736f93d3cdd2df7f7aaa08c6d3ead3..5ca3455ccb7e63139d14c3000dbd2e8db6375f04 100644
--- a/src/modules/dummypython/main.py
+++ b/src/modules/dummypython/main.py
@@ -87,6 +87,14 @@ def run():
 
     libcalamares.utils.debug("*** ACTIVITY ***")
 
+    # Expect error message that rootMountPoint is not set
+    libcalamares.utils.target_env_call(["ls"])
+    libcalamares.utils.target_env_call("ls")
+
+    # Expect error message can't chroot to /tmp
+    libcalamares.globalstorage.insert("rootMountPoint", "/tmp")
+    libcalamares.utils.target_env_call(["ls"])
+
     sleep(1)
 
     million = 1000000