diff --git a/kitty/shaders.c b/kitty/shaders.c
index 317abf75d..cdc9ffdff 100644
--- a/kitty/shaders.c
+++ b/kitty/shaders.c
@@ -2456,7 +2456,7 @@ run_custom_end_shader(OSWindow *os_window, float sx, float sy, monotonic_t now)
         }
 
         float anim_progress = 0.0f;
-        monotonic_t eff_dur = cg->animation_end_duration < 0 ? OPT(cursor_blink_interval) : cg->animation_end_duration;
+        monotonic_t eff_dur = cg->animation_end_duration < 0 ? OPT(cursor_stop_blinking_after) : cg->animation_end_duration;
         if (cg->animation_start_events != 0 && eff_dur > 0 && os_window->shader_group_anim[g].active) {
             monotonic_t started_at = os_window->shader_group_anim[g].started_at;
             bool cached = false;
diff --git a/kitty/shaders/slang.py b/kitty/shaders/slang.py
index 7ace511aa..c3e18eafa 100644
--- a/kitty/shaders/slang.py
+++ b/kitty/shaders/slang.py
@@ -1198,7 +1198,7 @@ class Group(TypedDict):
     animation_curve: EasingFunction  # parsed easing curve
     animation_step: int  # nanoseconds between animation samples
     animation_end_events: tuple[str, ...]  # events that stop the animation
-    animation_end_duration: int  # nanoseconds; 0 = no time limit, negative = use cursor_blink_interval
+    animation_end_duration: int  # nanoseconds; 0 = no time limit, negative = use cursor_stop_blinking_after
 
 
 class Pipeline(TypedDict):