diff --git a/src/engine/client/keynames.h b/src/engine/client/keynames.h
index 44340923b..de98b03ad 100644
--- a/src/engine/client/keynames.h
+++ b/src/engine/client/keynames.h
@@ -417,17 +417,17 @@ const char g_aaKeyStrings[512][20] =
 	"kpdillumup",
 	"eject",
 	"sleep",
-	"mouse_1",
-	"mouse_2",
-	"mouse_3",
-	"mouse_4",
-	"mouse_5",
-	"mouse_6",
-	"mouse_7",
-	"mouse_8",
-	"mouse_9",
-	"mouse_wheel_up",
-	"mouse_wheel_down",
+	"mouse1",
+	"mouse2",
+	"mouse3",
+	"mouse4",
+	"mouse5",
+	"mouse6",
+	"mouse7",
+	"mouse8",
+	"mouse9",
+	"mousewheelup",
+	"mousewheeldown",
 	"&422",
 	"&423",
 	"&424",