diff --git a/README.md b/README.md
index 44df649..0ac1397 100644
--- a/README.md
+++ b/README.md
@@ -13,9 +13,9 @@ Identify which human reference genome was used to align a BAM/SAM/CRAM file.
 <p>
 <a href="https://fulcrumgenomics.com">
 <picture>
-  <source media="(prefers-color-scheme: dark)" srcset=".github/logos/fulcrumgenomics-dark.svg">
-  <source media="(prefers-color-scheme: light)" srcset=".github/logos/fulcrumgenomics-light.svg">
-  <img alt="Fulcrum Genomics" src=".github/logos/fulcrumgenomics-light.svg" height="100">
+  <source media="(prefers-color-scheme: dark)" srcset="https://raw.githubusercontent.com/fulcrumgenomics/ref-solver/main/.github/logos/fulcrumgenomics-dark.svg">
+  <source media="(prefers-color-scheme: light)" srcset="https://raw.githubusercontent.com/fulcrumgenomics/ref-solver/main/.github/logos/fulcrumgenomics-light.svg">
+  <img alt="Fulcrum Genomics" src="https://raw.githubusercontent.com/fulcrumgenomics/ref-solver/main/.github/logos/fulcrumgenomics-light.svg" height="100">
 </picture>
 </a>
 </p>
diff --git a/src/catalog/builder.rs b/src/catalog/builder.rs
index 2d8769b..06ed703 100644
--- a/src/catalog/builder.rs
+++ b/src/catalog/builder.rs
@@ -987,13 +987,7 @@ impl std::fmt::Display for BuildSummary {
         writeln!(f)?;
 
         writeln!(f, "Coverage:")?;
-        let pct = |n: usize, total: usize| {
-            if total == 0 {
-                0
-            } else {
-                (n * 100) / total
-            }
-        };
+        let pct = |n: usize, total: usize| (n * 100).checked_div(total).unwrap_or(0);
         let check = |n: usize, total: usize| {
             if n == total {
                 "+"
diff --git a/src/catalog/index.rs b/src/catalog/index.rs
index 1106169..54046f1 100644
--- a/src/catalog/index.rs
+++ b/src/catalog/index.rs
@@ -30,7 +30,7 @@ impl<'a> CandidateFinder<'a> {
         }
 
         let mut candidates: Vec<_> = ref_counts.into_iter().collect();
-        candidates.sort_by(|a, b| b.1.cmp(&a.1)); // Sort by count descending
+        candidates.sort_by_key(|b| std::cmp::Reverse(b.1)); // Sort by count descending
         candidates
     }
 
@@ -68,7 +68,7 @@ impl<'a> CandidateFinder<'a> {
         }
 
         let mut candidates: Vec<_> = ref_counts.into_iter().collect();
-        candidates.sort_by(|a, b| b.1.cmp(&a.1));
+        candidates.sort_by_key(|b| std::cmp::Reverse(b.1));
         candidates
     }