diff -r 68443f5be176 -r 44679e468ba9 src/vertex.cpp
--- a/src/vertex.cpp	Sat Oct 05 23:47:03 2019 +0300
+++ b/src/vertex.cpp	Sun Nov 03 12:17:41 2019 +0200
@@ -211,10 +211,10 @@
 
 unsigned int qHash(const Vertex& key)
 {
-	return qHash(key.x) ^ rotl10(qHash(key.y)) ^ rotl20(qHash(key.z));
+	return qHash(key.x) ^ utility::rotl10(qHash(key.y)) ^ utility::rotl20(qHash(key.z));
 }
 
 QString vertexToStringParens(const Vertex& vertex)
 {
-	return format("(%1, %2, %3)", vertex.x, vertex.y, vertex.z);
+	return utility::format("(%1, %2, %3)", vertex.x, vertex.y, vertex.z);
 }