diff --git a/docs/get_cover_gallery.py b/docs/get_cover_gallery.py
index 07423017..fd38d97d 100644
--- a/docs/get_cover_gallery.py
+++ b/docs/get_cover_gallery.py
@@ -12,6 +12,7 @@
 rng = np.random.default_rng(247)
 
 init_vals["Hurdle"] = None
+init_vals["SkewStudentT"] = {"mu": 0.0, "sigma": 1, "a": 2.5, "b": 1.5}
 for name, params in init_vals.items():
     color = f"C{rng.integers(0, 4)}"
     _, ax = plt.subplots(figsize=(3.5, 2.3))
diff --git a/preliz/internal/distribution_helper.py b/preliz/internal/distribution_helper.py
index 1a772468..10351d6a 100644
--- a/preliz/internal/distribution_helper.py
+++ b/preliz/internal/distribution_helper.py
@@ -97,7 +97,7 @@ def process_extra(input_string):
     "Pareto": {"alpha": 5, "m": 2.0},
     "Rice": {"nu": 2.0, "sigma": 1.0},
     "SkewNormal": {"mu": 0.0, "sigma": 1, "alpha": 6.0},
-    "SkewStudentT": {"mu": 0.0, "sigma": 1, "a": 2.5, "b": 1.5},
+    "SkewStudentT": {"mu": 0.0, "sigma": 1, "a": 2, "b": 2},
     "StudentT": {"nu": 7, "mu": 0.0, "sigma": 1},
     "Triangular": {"lower": -2, "c": 0.0, "upper": 2.0},
     "TruncatedNormal": {"mu": 0.0, "sigma": 1, "lower": -2, "upper": 3.0},