diff --git a/bitcoin/src/pow.rs b/bitcoin/src/pow.rs
index 8809830e0..5e0782fae 100644
--- a/bitcoin/src/pow.rs
+++ b/bitcoin/src/pow.rs
@@ -1930,7 +1930,7 @@ mod tests {
     #[test]
     fn work_log2() {
         // Compare work log2 to historical Bitcoin Core values found in Core logs.
-        let tests: [(u128, f64); 5] = [
+        let tests: &[(u128, f64)] = &[
             // (chainwork, core log2)                // height
             (0x200020002, 33.000022),                // 1
             (0xa97d67041c5e51596ee7, 79.405055),     // 308004
@@ -1939,7 +1939,7 @@ mod tests {
             (0x2ef447e01d1642c40a184ada, 93.553183), // 738965
         ];
 
-        for (chainwork, core_log2) in tests {
+        for &(chainwork, core_log2) in tests {
             // Core log2 in the logs is rounded to 6 decimal places.
             let log2 = (Work::from(chainwork).log2() * 1e6).round() / 1e6;
             assert_eq!(log2, core_log2)