diff --git a/.swift-version b/.swift-version
new file mode 100644
index 00000000..9f55b2cc
--- /dev/null
+++ b/.swift-version
@@ -0,0 +1 @@
+3.0
diff --git a/Sources/Dollar.swift b/Sources/Dollar.swift
index 99e63f9b..e890c369 100644
--- a/Sources/Dollar.swift
+++ b/Sources/Dollar.swift
@@ -1238,11 +1238,11 @@ open class $ {
     /// - parameter matrix: Generic matrix containing any type.
     /// - returns: A transposed version of input matrix.
     open class func transpose<T>(_ matrix: [[T]]) -> [[T]] {
-        guard matrix.filter({ return $0.count == matrix[0].count }).count == matrix.count,
-            var returnMatrix: [[T?]] = Array(repeating: Array(repeating: nil, count: matrix.count),
-                                             count: matrix.first!.count) else {
+        guard matrix.filter({ return $0.count == matrix[0].count }).count == matrix.count else {
                 return matrix
         }
+        var returnMatrix: [[T?]] = Array(repeating: Array(repeating: nil, count: matrix.count),
+                                         count: matrix.first!.count)
         for (rowNumber, row) in matrix.enumerated() {
             for (index, item) in row.enumerated() {
                 returnMatrix[index][rowNumber] = item