diff --git a/modules/api/api.py b/modules/api/api.py
index efcedbba2..539805513 100644
--- a/modules/api/api.py
+++ b/modules/api/api.py
@@ -112,7 +112,7 @@ class Api:
     def text2imgapi(self, txt2imgreq: StableDiffusionTxt2ImgProcessingAPI):
         populate = txt2imgreq.copy(update={ # Override __init__ params
             "sd_model": shared.sd_model,
-            "sampler_name": validate_sampler_name(txt2imgreq.sampler_index),
+            "sampler_name": validate_sampler_name(txt2imgreq.sampler_name or txt2imgreq.sampler_index),
             "do_not_save_samples": True,
             "do_not_save_grid": True
             }
@@ -142,7 +142,7 @@ class Api:
 
         populate = img2imgreq.copy(update={ # Override __init__ params
             "sd_model": shared.sd_model,
-            "sampler_name": validate_sampler_name(img2imgreq.sampler_index),
+            "sampler_name": validate_sampler_name(img2imgreq.sampler_name or img2imgreq.sampler_index),
             "do_not_save_samples": True,
             "do_not_save_grid": True,
             "mask": mask