diff --git a/lact-gui/ui/graphs_window.blp b/lact-gui/ui/graphs_window.blp
index 1be6859..1dd012e 100644
--- a/lact-gui/ui/graphs_window.blp
+++ b/lact-gui/ui/graphs_window.blp
@@ -30,7 +30,7 @@ template $GraphsWindow: Window {
       $Plot fan_plot {
           title: "Fan speed";
           hexpand: true;
-          value-suffix: "PWM";
+          value-suffix: "RPM";
           secondary-value-suffix: "%";
           y-label-area-size: 140;
           secondary-y-label-area-size: 80;