diff --git a/Cargo.toml b/Cargo.toml
index e916941..c4b2dd8 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "regioners"
-version = "0.3.0"
+version = "0.3.1"
 edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
diff --git a/src/overlappers.rs b/src/overlappers.rs
index 42f4855..aba41de 100644
--- a/src/overlappers.rs
+++ b/src/overlappers.rs
@@ -16,19 +16,19 @@ pub enum Overlapper {
 impl Overlapper {
     pub fn ovl(&self, a_intv: &Lapper<u64, u64>, b_intv: &Lapper<u64, u64>) -> u64 {
         match self {
-            /* Return number of A intervals intersecting a B intervals */
+            /* Return number of B intervals intersecting each A interval */
             Overlapper::All => a_intv
+                .iter()
+                .map(|i| b_intv.find(i.start, i.stop).count() as u64)
+                .sum(),
+            /* Return number of A intervals intersecting a B intervals */
+            Overlapper::Any => a_intv
                 .iter()
                 .map(|i| match b_intv.find(i.start, i.stop).next() {
                     Some(_) => 1,
                     None => 0,
                 })
                 .sum(),
-            /* Return number of b intervals intersecting each of a's intervals */
-            Overlapper::Any => a_intv
-                .iter()
-                .map(|i| b_intv.find(i.start, i.stop).count() as u64)
-                .sum(),
         }
     }
 }