diff --git a/crates/red_knot_python_semantic/src/semantic_index/symbol.rs b/crates/red_knot_python_semantic/src/semantic_index/symbol.rs
index f8817cc02f..07cfb1a61e 100644
--- a/crates/red_knot_python_semantic/src/semantic_index/symbol.rs
+++ b/crates/red_knot_python_semantic/src/semantic_index/symbol.rs
@@ -261,7 +261,7 @@ impl ScopeKind {
 }
 
 /// Symbol table for a specific [`Scope`].
-#[derive(Debug, Default, salsa::Update)]
+#[derive(Default, salsa::Update)]
 pub struct SymbolTable {
     /// The symbols in this scope.
     symbols: IndexVec<ScopedSymbolId, Symbol>,
@@ -322,6 +322,16 @@ impl PartialEq for SymbolTable {
 
 impl Eq for SymbolTable {}
 
+impl std::fmt::Debug for SymbolTable {
+    /// Exclude the `symbols_by_name` field from the debug output.
+    /// It's very noisy and not useful for debugging.
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        f.debug_tuple("SymbolTable")
+            .field(&self.symbols)
+            .finish_non_exhaustive()
+    }
+}
+
 #[derive(Debug, Default)]
 pub(super) struct SymbolTableBuilder {
     table: SymbolTable,