diff --git a/tests/executable.rs b/tests/executable.rs
index 2748cfb995..9dd71e8dd1 100644
--- a/tests/executable.rs
+++ b/tests/executable.rs
@@ -143,6 +143,16 @@ fn check_file(tempdir: &TempDir, rest: &str) {
 
 /* Keep tests alphabetized */
 
+#[test]
+fn bad_chatter_1() {
+    if env::var("RUNNING_COVERAGE").is_ok() {
+        return;
+    }
+
+    let output = run_tectonic(&PathBuf::from("."), &["-", "--chatter=reticent"]);
+    error_or_panic(output);
+}
+
 #[test]
 fn bad_input_path_1() {
     if env::var("RUNNING_COVERAGE").is_ok() {
@@ -163,6 +173,16 @@ fn bad_input_path_2() {
     error_or_panic(output);
 }
 
+#[test]
+fn bad_outfmt_1() {
+    if env::var("RUNNING_COVERAGE").is_ok() {
+        return;
+    }
+
+    let output = run_tectonic(&PathBuf::from("."), &["-", "--outfmt=dd"]);
+    error_or_panic(output);
+}
+
 #[test]
 fn help_flag() {
     if env::var("RUNNING_COVERAGE").is_ok() {