diff --git a/src/extra/LinenTowelPatterns.cpp b/src/extra/LinenTowelPatterns.cpp
index 5d722ca..c799d49 100644
--- a/src/extra/LinenTowelPatterns.cpp
+++ b/src/extra/LinenTowelPatterns.cpp
@@ -87,7 +87,7 @@ int64_t LinenTowelPatterns::countArrangements(const std::string& design)
         } while (startPosition < canStartFrom.size() && !canStartFrom[startPosition]);
     }
 
-    return *nArrangements.rbegin();
+    return nArrangements.back();
 }
 
 void LinenTowelPatterns::addBranch()