diff --git a/datafusion/core/src/execution/context/mod.rs b/datafusion/core/src/execution/context/mod.rs
index 621b214818e9..205e308b7c84 100644
--- a/datafusion/core/src/execution/context/mod.rs
+++ b/datafusion/core/src/execution/context/mod.rs
@@ -1312,8 +1312,8 @@ impl SessionContext {
     /// Registers a [`TableProvider`] as a table that can be
     /// referenced from SQL statements executed against this context.
     ///
-    /// Returns the [`TableProvider`] previously registered for this
-    /// reference, if any
+    /// If a table of the same name was already registered, returns "Table
+    /// already exists" error.
     pub fn register_table(
         &self,
         table_ref: impl Into<TableReference>,