diff --git a/modules/sd_samplers.py b/modules/sd_samplers.py
index 76e82ed5..d99eecad 100644
--- a/modules/sd_samplers.py
+++ b/modules/sd_samplers.py
@@ -63,9 +63,10 @@ def set_samplers():
 
 def add_sampler(sampler):
     global all_samplers, all_samplers_map
-    all_samplers.append(sampler)
-    all_samplers_map = {x.name: x for x in all_samplers}
-    set_samplers()
+    if sampler.name not in [x.name for x in all_samplers]:
+        all_samplers.append(sampler)
+        all_samplers_map = {x.name: x for x in all_samplers}
+        set_samplers()
     return