diff --git a/PVE/API2/Qemu.pm b/PVE/API2/Qemu.pm
index d509bb79..0f27d299 100644
--- a/PVE/API2/Qemu.pm
+++ b/PVE/API2/Qemu.pm
@@ -431,7 +431,7 @@ __PACKAGE__->register_method({
 		    description => "Add the VM to the specified pool.",
 		},
 		bwlimit => {
-		    description => "Override io bandwidth.",
+		    description => "Override i/o bandwidth limit (in KiB/s).",
 		    optional => 1,
 		    type => 'integer',
 		    minimum => '0',
diff --git a/PVE/CLI/qmrestore.pm b/PVE/CLI/qmrestore.pm
index 7e12b107..9ec00512 100755
--- a/PVE/CLI/qmrestore.pm
+++ b/PVE/CLI/qmrestore.pm
@@ -54,7 +54,7 @@ __PACKAGE__->register_method({
 		description => "Add the VM to the specified pool.",
 	    },
 	    bwlimit => {
-		description => "Override io bandwidth.",
+		description => "Override i/o bandwidth limit (in KiB/s).",
 		optional => 1,
 		type => 'number',
 		minimum => '0',