diff --git a/pymc_marketing/mmm/base.py b/pymc_marketing/mmm/base.py
index 335ac43a..a690099e 100644
--- a/pymc_marketing/mmm/base.py
+++ b/pymc_marketing/mmm/base.py
@@ -459,7 +459,7 @@ def plot_channel_parameter(self, param_name: str, **plt_kwargs: Any) -> plt.Figu
         fig, ax = plt.subplots(**plt_kwargs)
         sns.violinplot(data=param_samples_df, orient="h", ax=ax)
         ax.set(
-            title=f"Posterior Distribution - {param_name} Parameter",
+            title=f"Posterior Distribution: {param_name} Parameter",
             xlabel=param_name,
             ylabel="channel",
         )