diff --git a/apps/ex2.mu b/apps/ex2.mu
new file mode 100644
index 00000000..fc20aa2e
--- /dev/null
+++ b/apps/ex2.mu
@@ -0,0 +1,17 @@
+# Add two numbers, and return the result in the exit code.
+#
+# To run:
+#   $ ./translate_mu apps/ex2.mu
+#   $ ./a.elf
+# Expected result:
+#   $ echo $?
+#   7
+
+fn main -> result/ebx: int {
+  result <- do-add 3 4
+}
+
+fn do-add a: int, b: int -> result/ebx: int {
+  result <- copy a
+  result <- add b
+}