diff --git a/fuzz/fuzz_targets/compile_descriptor.rs b/fuzz/fuzz_targets/compile_descriptor.rs
index 140e230ec..a65e47a22 100644
--- a/fuzz/fuzz_targets/compile_descriptor.rs
+++ b/fuzz/fuzz_targets/compile_descriptor.rs
@@ -19,7 +19,7 @@ fn do_test(data: &[u8]) {
             let output = desc.to_string();
             if let Ok(desc) = DummyScript::from_str(&output) {
                 let rtt = desc.to_string();
-                assert_eq!(output, rtt);
+                assert_eq!(output.to_lowercase(), rtt.to_lowercase());
             } else {
                 panic!("compiler output something unparseable: {}", output)
             }
diff --git a/fuzz/fuzz_targets/roundtrip_concrete.rs b/fuzz/fuzz_targets/roundtrip_concrete.rs
index d5805b236..a966b43a0 100644
--- a/fuzz/fuzz_targets/roundtrip_concrete.rs
+++ b/fuzz/fuzz_targets/roundtrip_concrete.rs
@@ -15,7 +15,7 @@ fn do_test(data: &[u8]) {
         let re = Regex::new("(\\D)1@").unwrap();
         let output = re.replace_all(&output, "$1");
         let data_str = re.replace_all(&data_str, "$1");
-        assert_eq!(data_str, output);
+        assert_eq!(data_str.to_lowercase(), output.to_lowercase());
     }
 }
 
diff --git a/fuzz/fuzz_targets/roundtrip_descriptor.rs b/fuzz/fuzz_targets/roundtrip_descriptor.rs
index 7f462938d..6294cc3cb 100644
--- a/fuzz/fuzz_targets/roundtrip_descriptor.rs
+++ b/fuzz/fuzz_targets/roundtrip_descriptor.rs
@@ -18,7 +18,7 @@ fn do_test(data: &[u8]) {
         let normalize_aliases = multi_wrap_pkh_re.replace_all(&normalize_aliases, "$1:pkh(");
         let normalize_aliases = normalize_aliases.replace("c:pk_k(", "pk(").replace("c:pk_h(", "pkh(");
 
-        assert_eq!(normalize_aliases, output);
+        assert_eq!(normalize_aliases.to_lowercase(), output.to_lowercase());
     }
 }
 
diff --git a/fuzz/fuzz_targets/roundtrip_miniscript_str.rs b/fuzz/fuzz_targets/roundtrip_miniscript_str.rs
index df4650ab8..23083d947 100644
--- a/fuzz/fuzz_targets/roundtrip_miniscript_str.rs
+++ b/fuzz/fuzz_targets/roundtrip_miniscript_str.rs
@@ -20,7 +20,7 @@ fn do_test(data: &[u8]) {
         let normalize_aliases = multi_wrap_pkh_re.replace_all(&normalize_aliases, "$1:pkh(");
         let normalize_aliases = normalize_aliases.replace("c:pk_k(", "pk(").replace("c:pk_h(", "pkh(");
 
-        assert_eq!(normalize_aliases, output);
+        assert_eq!(normalize_aliases.to_lowercase(), output.to_lowercase());
 
     }
 }
diff --git a/fuzz/fuzz_targets/roundtrip_semantic.rs b/fuzz/fuzz_targets/roundtrip_semantic.rs
index 75b1dac2f..eb97e55a7 100644
--- a/fuzz/fuzz_targets/roundtrip_semantic.rs
+++ b/fuzz/fuzz_targets/roundtrip_semantic.rs
@@ -10,7 +10,7 @@ fn do_test(data: &[u8]) {
     let data_str = String::from_utf8_lossy(data);
     if let Ok(pol) = DummyPolicy::from_str(&data_str) {
         let output = pol.to_string();
-        assert_eq!(data_str, output);
+        assert_eq!(data_str.to_lowercase(), output.to_lowercase());
     }
 }
 
diff --git a/src/policy/mod.rs b/src/policy/mod.rs
index e9e93160e..3332ab93f 100644
--- a/src/policy/mod.rs
+++ b/src/policy/mod.rs
@@ -155,13 +155,13 @@ mod tests {
     fn concrete_policy_rtt(s: &str) {
         let conc = ConcretePol::from_str(s).unwrap();
         let output = conc.to_string();
-        assert_eq!(s, output);
+        assert_eq!(s.to_lowercase(), output.to_lowercase());
     }
 
     fn semantic_policy_rtt(s: &str) {
         let sem = SemanticPol::from_str(s).unwrap();
         let output = sem.to_string();
-        assert_eq!(s, output);
+        assert_eq!(s.to_lowercase(), output.to_lowercase());
     }
 
     #[test]
@@ -177,6 +177,7 @@ mod tests {
         //fuzzer crashes
         assert!(ConcretePol::from_str("thresh()").is_err());
         assert!(SemanticPol::from_str("thresh()").is_err());
+        concrete_policy_rtt("ripemd160(aaaaaaaaaaaaaaaaaaaaaa0Daaaaaaaaaabaaaaa)");
     }
 
     #[test]