diff --git a/seaborn/regression.py b/seaborn/regression.py
index e302149bd1..aad95a6bb4 100644
--- a/seaborn/regression.py
+++ b/seaborn/regression.py
@@ -397,6 +397,8 @@ def scatterplot(self, ax, kws):
         else:
             # TODO abstraction
             ci_kws = {"color": kws["color"]}
+            if "alpha" in kws:
+                ci_kws["alpha"] = kws["alpha"]
             ci_kws["linewidth"] = mpl.rcParams["lines.linewidth"] * 1.75
             kws.setdefault("s", 50)