diff --git a/src/ct_driver.c b/src/ct_driver.c
index 720b250..01570da 100644
--- a/src/ct_driver.c
+++ b/src/ct_driver.c
@@ -676,7 +676,7 @@ static const char *vgahwSymbols[] = {
     "vgaHWSave",
     "vgaHWUnlock",
     "vgaHWVBlankKGA",
-    "vgaHWddc1SetSpeed",
+    "vgaHWddc1SetSpeedWeak",
     NULL
 };