diff --git a/CHANGES b/CHANGES
index b25a67fb..0cfe1a08 100644
--- a/CHANGES
+++ b/CHANGES
@@ -5,6 +5,7 @@ SVN HEAD
   libsensors: Added support for new sysfs attributes
               Change sysfs detection to survive upcoming kernel changes
   sensord: Fix memory leaks revealed by valgrind
+           Minor performance improvements
   sensors: Added support for new sysfs attributes
            Display both instantaneous and average power if available.
            Report thermal sensor type 1 as CPU diode
diff --git a/prog/sensord/sense.c b/prog/sensord/sense.c
index 888a5d1d..6ed91a29 100644
--- a/prog/sensord/sense.c
+++ b/prog/sensord/sense.c
@@ -114,10 +114,8 @@ static int do_features(const sensors_chip_name *chip,
 		if (feature->rrd) {
 			const char *rrded = feature->rrd(val);
 
-			/* FIXME: Jean's review comment:
-			 * sprintf would me more efficient.
-			 */
-			strcat(strcat (rrdBuff, ":"), rrded ? rrded : "U");
+			sprintf(rrdBuff + strlen(rrdBuff), ":%s",
+				rrded ? rrded : "U");
 		}
 
 		return 0;