diff --git a/tests/exercise_instructions.rs b/tests/exercise_instructions.rs
index 78532f48..e3ace281 100644
--- a/tests/exercise_instructions.rs
+++ b/tests/exercise_instructions.rs
@@ -348,6 +348,13 @@ fn fuzz_alu() {
             test_ins(true, format!("neg64 r{src}"), &mut prng, 21);
             test_ins(true, format!("neg32 r{src}"), &mut prng, 21);
 
+            test_ins(true, format!("le16 r{src}"), &mut prng, 21);
+            test_ins(true, format!("le32 r{src}"), &mut prng, 21);
+            test_ins(true, format!("le64 r{src}"), &mut prng, 21);
+            test_ins(true, format!("be16 r{src}"), &mut prng, 21);
+            test_ins(true, format!("be32 r{src}"), &mut prng, 21);
+            test_ins(true, format!("be64 r{src}"), &mut prng, 21);
+
             test_ins(true, format!("mul64 r{src}, {imm}"), &mut prng, 21);
             test_ins(true, format!("mod64 r{src}, {imm}"), &mut prng, 21);
             test_ins(true, format!("div64 r{src}, {imm}"), &mut prng, 21);