diff --git a/lib/libsensors.3 b/lib/libsensors.3
index 34945310..ddc11658 100644
--- a/lib/libsensors.3
+++ b/lib/libsensors.3
@@ -59,7 +59,7 @@ libsensors \- publically accessible functions provided by the sensors library
 
 .B void sensors_cleanup(void);
 .br
-Strictly optional clean-up function: You can't access anything after this, until the next sensors_init() call!
+Clean-up function: You can't access anything after this, until the next sensors_init() call!
 .br
 
 \fBint sensors_parse_chip_name(const char *orig_name,
diff --git a/lib/sensors.h b/lib/sensors.h
index 573d9f7d..1222d8bc 100644
--- a/lib/sensors.h
+++ b/lib/sensors.h
@@ -48,7 +48,7 @@ typedef struct sensors_chip_name {
     assume anything will be initialized properly. */
 extern int sensors_init(FILE *input);
 
-/* Strictly optional clean-up function: You can't access anything after
+/* Clean-up function: You can't access anything after
    this, until the next sensors_init() call! */
 extern void sensors_cleanup(void);