diff --git a/engine/joint/v4k.h b/engine/joint/v4k.h
index 917c392..a901cd5 100644
--- a/engine/joint/v4k.h
+++ b/engine/joint/v4k.h
@@ -395733,7 +395733,7 @@ static void v4k_post_init(float refresh_rate) {
     // preload brdf LUT early
     (void)brdf_lut();
 
-    uint64_t fps = optioni("--delta", 0);
+    uint64_t fps = optioni("--fps", 0);
     if( fps ) {
         window_fps_lock(fps);
     }
diff --git a/engine/split/v4k_main.c b/engine/split/v4k_main.c
index 49bef53..abfb409 100644
--- a/engine/split/v4k_main.c
+++ b/engine/split/v4k_main.c
@@ -52,7 +52,7 @@ static void v4k_post_init(float refresh_rate) {
     // preload brdf LUT early
     (void)brdf_lut();
 
-    uint64_t fps = optioni("--delta", 0);
+    uint64_t fps = optioni("--fps", 0);
     if( fps ) {
         window_fps_lock(fps);
     }
diff --git a/engine/v4k.c b/engine/v4k.c
index b3dcf00..17b88ad 100644
--- a/engine/v4k.c
+++ b/engine/v4k.c
@@ -30273,7 +30273,7 @@ static void v4k_post_init(float refresh_rate) {
     // preload brdf LUT early
     (void)brdf_lut();
 
-    uint64_t fps = optioni("--delta", 0);
+    uint64_t fps = optioni("--fps", 0);
     if( fps ) {
         window_fps_lock(fps);
     }