diff --git a/tools/mouse-dpi-tool.c b/tools/mouse-dpi-tool.c
index dc54a0d..be30a4d 100644
--- a/tools/mouse-dpi-tool.c
+++ b/tools/mouse-dpi-tool.c
@@ -51,8 +51,10 @@ static int
 usage(void) {
 	printf("Usage: %s /dev/input/event0\n", program_invocation_short_name);
 	printf("\n");
-	printf("This tool reads relative events from the kernel and calculates\n "
-	       "the distance covered and frequency of the incoming events.\n");
+	printf("This tool reads relative events from the kernel and calculates\n"
+	       "the distance covered and maximum frequency of the incoming events.\n"
+	       "Some mouse devices provide dynamic frequencies, it is\n"
+	       "recommended to measure multiple times to obtain the highest value.\n");
 	return 1;
 }