diff --git a/Selection Sampling/README.markdown b/Selection Sampling/README.markdown
index 741f592f4..5c2ff5e25 100644
--- a/Selection Sampling/README.markdown	
+++ b/Selection Sampling/README.markdown	
@@ -12,7 +12,7 @@ func select<T>(from a: [T], count k: Int) -> [T] {
   for i in 0..<k {
     let r = random(min: i, max: a.count - 1)
     if i != r {
-      swap(&a[i], &a[r])
+      a.swapAt(i, r) // Corrected line in README
     }
   }
   return Array(a[0..<k])
diff --git a/Selection Sampling/SelectionSampling.swift b/Selection Sampling/SelectionSampling.swift
index 52aa5988b..711460f47 100644
--- a/Selection Sampling/SelectionSampling.swift	
+++ b/Selection Sampling/SelectionSampling.swift	
@@ -17,7 +17,7 @@ func select<T>(from a: [T], count k: Int) -> [T] {
   for i in 0..<k {
     let r = random(min: i, max: a.count - 1)
     if i != r {
-      swap(&a[i], &a[r])
+      a.swapAt(i, r) // Corrected line
     }
   }
   return Array(a[0..<k])