diff --git a/test/aeso_compiler_tests.erl b/test/aeso_compiler_tests.erl
index 81f2cef..1c724a5 100644
--- a/test/aeso_compiler_tests.erl
+++ b/test/aeso_compiler_tests.erl
@@ -1175,6 +1175,13 @@ failing_contracts() ->
                   [<<?Pos(5,16)
                      "`f` must be payable because the entrypoint `f` in the interface `I` is payable">>
                   ])
+    , ?TYPE_ERROR(calling_child_contract_entrypoint,
+                  [<<?Pos(5,20)
+                     "Invalid call to contract entrypoint `F.g`.\n"
+                     "It must be called as `c.g` for some `c : F`.">>])
+    , ?TYPE_ERROR(using_contract_as_namespace,
+                  [<<?Pos(5,3)
+                     "Cannot use undefined namespace F">>])
     ].
 
 validation_test_() ->
diff --git a/test/contracts/calling_child_contract_entrypoint.aes b/test/contracts/calling_child_contract_entrypoint.aes
new file mode 100644
index 0000000..3e9f4c0
--- /dev/null
+++ b/test/contracts/calling_child_contract_entrypoint.aes
@@ -0,0 +1,5 @@
+contract F =
+  entrypoint g() = 1
+
+main contract C =
+  entrypoint f() = F.g()
diff --git a/test/contracts/using_contract_as_namespace.aes b/test/contracts/using_contract_as_namespace.aes
new file mode 100644
index 0000000..61c1390
--- /dev/null
+++ b/test/contracts/using_contract_as_namespace.aes
@@ -0,0 +1,7 @@
+contract F =
+  entrypoint g() = 1
+
+main contract C =
+  using F for [g]
+
+  entrypoint f() = g()
\ No newline at end of file