diff --git a/src/test/run-make-fulldeps/coverage-reports/expected_show_coverage.unused_mod.txt b/src/test/run-make-fulldeps/coverage-reports/expected_show_coverage.unused_mod.txt
new file mode 100644
index 0000000000000..0ee80350e1134
--- /dev/null
+++ b/src/test/run-make-fulldeps/coverage-reports/expected_show_coverage.unused_mod.txt
@@ -0,0 +1,7 @@
+    1|       |#[path = "lib/unused_mod_helper.rs"]
+    2|       |mod unused_module;
+    3|       |
+    4|      1|fn main() {
+    5|      1|    println!("hello world!");
+    6|      1|}
+
diff --git a/src/test/run-make-fulldeps/coverage/lib/unused_mod_helper.rs b/src/test/run-make-fulldeps/coverage/lib/unused_mod_helper.rs
new file mode 100644
index 0000000000000..ae1cc1531ed75
--- /dev/null
+++ b/src/test/run-make-fulldeps/coverage/lib/unused_mod_helper.rs
@@ -0,0 +1,3 @@
+pub fn never_called_function() {
+    println!("I am never called");
+}
diff --git a/src/test/run-make-fulldeps/coverage/unused_mod.rs b/src/test/run-make-fulldeps/coverage/unused_mod.rs
new file mode 100644
index 0000000000000..679b4e5318803
--- /dev/null
+++ b/src/test/run-make-fulldeps/coverage/unused_mod.rs
@@ -0,0 +1,6 @@
+#[path = "lib/unused_mod_helper.rs"]
+mod unused_module;
+
+fn main() {
+    println!("hello world!");
+}