diff --git a/runners/apex/README.md b/runners/apex/README.md
index 9a82731b25ebd..b9bc74f75d9be 100644
--- a/runners/apex/README.md
+++ b/runners/apex/README.md
@@ -44,7 +44,7 @@ Then switch to the newly created directory and run Maven to build the Apache Bea
 
 ```
 cd beam
-mvn clean install ‐DskipTests
+mvn clean install -DskipTests
 ```
 
 Now Apache Beam and the Apex Runner are installed in your local Maven repository.