diff --git a/deps/examples/java-multiCameraServer/README.txt b/deps/examples/java-multiCameraServer/README.txt
index 851125a..eaf1844 100644
--- a/deps/examples/java-multiCameraServer/README.txt
+++ b/deps/examples/java-multiCameraServer/README.txt
@@ -6,6 +6,9 @@ Building on desktop
 Building
 --------
 
+Java 11 is required to build.  Set your path and/or JAVA_HOME environment
+variable appropriately.
+
 1) Run "./gradlew build"
 
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