diff --git a/Makefile b/Makefile
index 5de0d18afdd6a..a99c7e495562e 100644
--- a/Makefile
+++ b/Makefile
@@ -101,6 +101,9 @@ DEBUGSYMS = -g
 #OTHERS = -O3
 #DEFINES = -DNDEBUG
 
+# Tells ccache to keep comments, as they can be meaningful to the compiler (as to suppress warnings).
+export CCACHE_COMMENTS=1
+
 # Disable debug. Comment this out to get logging.
 #DEFINES = -DENABLE_LOGGING