diff --git a/gradle.properties b/gradle.properties
index 1007f5b852..adb4adeaf2 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -14,4 +14,6 @@
 org.gradle.jvmargs=-Xmx1536M -Dkotlin.daemon.jvm.options\="-Xmx1536M"
 
 android.useAndroidX=true
+# Do not turn on full mode for as long as possible: looking at unused.txt diff there are many
+# differences with an increased risk of breaking things.
 android.enableR8.fullMode=false