diff --git a/fuzz/fuzz_targets/bitcoin/deserialize_script.rs b/fuzz/fuzz_targets/bitcoin/deserialize_script.rs
index 6943bc64c..2518061e4 100644
--- a/fuzz/fuzz_targets/bitcoin/deserialize_script.rs
+++ b/fuzz/fuzz_targets/bitcoin/deserialize_script.rs
@@ -10,6 +10,9 @@ fn do_test(data: &[u8]) {
         let _: Result<Vec<script::Instruction>, script::Error> = script.instructions().collect();
 
         let _ = script.to_string();
+        let _ = script.count_sigops();
+        let _ = script.count_sigops_legacy();
+
         let mut b = script::Builder::new();
         for ins in script.instructions_minimal() {
             if ins.is_err() {