diff --git a/man/evdev.man b/man/evdev.man
index 530f979..f34d19c 100644
--- a/man/evdev.man
+++ b/man/evdev.man
@@ -71,6 +71,11 @@ enabled.  Default: 50.
 .BI "Option \*qReopenAttempts\*q \*q" integer \*q
 Number of reopen attempts after a read error occurs on the device (e.g. after
 waking up from suspend). In between each attempt is a 100ms wait. Default: 10.
+.TP 7
+.BI "Option \*qSensitivity\*q \*q" float \*q
+Multiply mouse movements by this number. Can be used to slow the mouse down
+(by specifying a number between 0.0 and 1.0), or to speed the mouse up (by
+specifying a number greater than 1.0). Default: 1.0
 
 .SH AUTHORS
 Kristian Høgsberg.
diff --git a/src/evdev.c b/src/evdev.c
index c0fe244..fc732f7 100644
--- a/src/evdev.c
+++ b/src/evdev.c
@@ -360,8 +360,18 @@ EvdevReadInput(InputInfoPtr pInfo)
 	}
     }
 
-    if (dx != 0 || dy != 0)
+    if (dx != 0 || dy != 0) {
+
+        /* Adjust for mouse sensitivity. */
+        pEvdev->fracx += dx * pEvdev->sensitivity;
+        dx = (int)pEvdev->fracx;
+        pEvdev->fracx -= dx;
+        pEvdev->fracy += dy * pEvdev->sensitivity;
+        dy = (int)pEvdev->fracy;
+        pEvdev->fracy -= dy;
+
         xf86PostMotionEvent(pInfo->dev, FALSE, 0, 2, dx, dy);
+    }
 
     /*
      * Some devices only generate valid abs coords when BTN_DIGI is
@@ -1272,6 +1282,9 @@ EvdevPreInit(InputDriverPtr drv, IDevPtr dev, int flags)
      */
     pEvdev->tool = 1;
 
+    pEvdev->sensitivity = xf86SetRealOption(pInfo->options, "Sensitivity", 1.0);
+    xf86Msg(X_CONFIG, "%s: Sensitivity: %f\n", pInfo->name, pEvdev->sensitivity);
+
     device = xf86CheckStrOption(dev->commonOptions, "Path", NULL);
     if (!device)
 	device = xf86CheckStrOption(dev->commonOptions, "Device", NULL);
diff --git a/src/evdev.h b/src/evdev.h
index 9f16b81..2f69735 100644
--- a/src/evdev.h
+++ b/src/evdev.h
@@ -83,6 +83,10 @@ typedef struct {
     long abs_bitmask[NBITS(ABS_MAX)];
     long led_bitmask[NBITS(LED_MAX)];
     struct input_absinfo absinfo[ABS_MAX];
+
+    /* Mouse sensitivity. */
+    float sensitivity;
+    float fracx, fracy;
 } EvdevRec, *EvdevPtr;
 
 /* Middle Button emulation */