diff --git a/README.md b/README.md
index 3702fe33d755da35162307ff1c15b578a0b87d64..07a61c6ece051a0388ee56f003eefe59f7eba75e 100644
--- a/README.md
+++ b/README.md
@@ -108,7 +108,7 @@ that should be compatible with this version:
 * [Iris Atomic](https://gitlab.mpi-sws.org/iris/atomic) is an experimental
   formalization of logically atomic triples in Iris.
 * [Iron](https://gitlab.mpi-sws.org/iris/iron) is a linear separation logic
-  build on top of Iris for precise reasoning about resources (such as making
+  built on top of Iris for precise reasoning about resources (such as making
   sure there are no memory leaks).
 
 ## Further Resources