diff --git a/Changes b/Changes
index 60554bc..8d92779 100644
--- a/Changes
+++ b/Changes
@@ -5,6 +5,8 @@ N.N.N  - DD-MMM-2015
 - Fixed a message of 'use of uninitialized value' in 'port.pm'. [#110]
 - Fixed the Y-axis title in 'fail2ban.pm'. [#111]
 - Fixed to avoid negative values in the network graph of 'process.pm'. [#117]
+- Fixed to force a rigid scale in the memory graph.
+	(thanks to Lane Russell, lanerussell028 AT gmail.com for pointing this out)
 - Small cosmetic changes.
 
 
diff --git a/lib/system.pm b/lib/system.pm
index 00043d9..de2e24d 100644
--- a/lib/system.pm
+++ b/lib/system.pm
@@ -703,6 +703,7 @@ sub system_cgi {
 		"--height=$height",
 		"--upper-limit=$total_mem",
 		"--lower-limit=0",
+		"--rigid",
 		"--base=1024",
 		$zoom,
 		@{$cgi->{version12}},
@@ -737,6 +738,7 @@ sub system_cgi {
 			"--height=$height",
 			"--upper-limit=$total_mem",
 			"--lower-limit=0",
+			"--rigid",
 			"--base=1024",
 			$zoom,
 			@{$cgi->{version12}},