diff --git a/src/tint/lang/wgsl/writer/syntax_tree_printer/syntax_tree_printer.cc b/src/tint/lang/wgsl/writer/syntax_tree_printer/syntax_tree_printer.cc
index d2e27f5..16735f2 100644
--- a/src/tint/lang/wgsl/writer/syntax_tree_printer/syntax_tree_printer.cc
+++ b/src/tint/lang/wgsl/writer/syntax_tree_printer/syntax_tree_printer.cc
@@ -725,9 +725,6 @@
         case core::BinaryOp::kModulo:
             Line() << "%";
             break;
-        default:
-            diagnostics_.add_error(diag::System::Writer, "missing binary operation type");
-            break;
     }
 }