diff --git a/config/corne.keymap b/config/corne.keymap
index 99d9806..a3fcabb 100644
--- a/config/corne.keymap
+++ b/config/corne.keymap
@@ -28,7 +28,7 @@
 
         mmv {
             acceleration-exponent = <1>;      // 1
-            time-to-max-speed-ms = <300>;    // 40
+            time-to-max-speed-ms = <600>;    // 40
             delay-ms = <0>;                   // 0
         };