diff --git a/meta/classes/ccache.bbclass b/meta/classes/ccache.bbclass
index 4532894c57..913304ab35 100644
--- a/meta/classes/ccache.bbclass
+++ b/meta/classes/ccache.bbclass
@@ -12,7 +12,12 @@
 #   Set CCACHE_TOP_DIR to a shared dir
 #   CCACHE_TOP_DIR = /path/to/shared_ccache/
 #
-# - TO debug ccahe
+# - Adjust the ccache size limit to avoid overflow during large builds:
+#   export CCACHE_MAXSIZE = "100G"
+#   To find a reasonable limit, set this limit to 0 (no limit), then
+#   observe how large the ccache directory grows.
+#
+# - To debug ccache:
 #   export CCACHE_DEBUG = "1"
 #   export CCACHE_LOGFILE = "${CCACHE_DIR}/logfile.log"
 #   And also set PARALLEL_MAKE = "-j 1" to get make the log in order