diff --git a/Fundamental-Problems.md b/Fundamental-Problems.md
index 4e48e10..8c7fae2 100644
--- a/Fundamental-Problems.md
+++ b/Fundamental-Problems.md
@@ -21,7 +21,7 @@
     * We can use rules to resolve conflicts and ensure eventual consistency
     * But the rules can be abused to manipulate the outcome
 
-Problem 4 is one of the things that makes multi-device support difficult - although @grote's master/slave idea could sidestep the problem.
+Problem 4 is one of the things that makes multi-device support difficult - although @grote's leader/follower idea could sidestep the problem.
 
 We ran into problem 5 when working on private groups, and it's also affecting Matrix's room consensus algorithm at the moment.