diff --git a/src/ast/pretty_print.rs b/src/ast/pretty_print.rs
index 274cb31..c8caf06 100644
--- a/src/ast/pretty_print.rs
+++ b/src/ast/pretty_print.rs
@@ -19,6 +19,7 @@ impl PrettyPrint for Operator {
 
 impl PrettyPrint for BinaryOperator {
     fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
+        writer.write_indented("BinaryOperator(")?;
         use BinaryOperator::*;
         match self {
             Or => writer.write("||"),
@@ -36,12 +37,15 @@ impl PrettyPrint for BinaryOperator {
             Modulo => writer.write("%"),
             LeftShift => writer.write("<<"),
             RightShift => writer.write(">>"),
-        }
+        }?;
+        writer.writeln(")")?;
+        Ok(())
     }
 }
 
 impl PrettyPrint for PrefixUnaryOperator {
     fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
+        writer.write_indented("PrefixUnaryOperator(")?;
         use PrefixUnaryOperator::*;
         match self {
             Spread => writer.write("..."),
@@ -50,17 +54,22 @@ impl PrettyPrint for PrefixUnaryOperator {
             Mut => writer.write("mut"),
             Not => writer.write("!"),
             Negative => writer.write("-"),
-        }
+        }?;
+        writer.writeln(")")?;
+        Ok(())
     }
 }
 
 impl PrettyPrint for SuffixUnaryOperator {
     fn pretty_print(&self, writer: &mut IndentWriter) -> std::io::Result<()> {
+        writer.write_indented("SuffixUnaryOperator(")?;
         use SuffixUnaryOperator::*;
         match self {
             PlusPlus => writer.write("++"),
             MinusMinus => writer.write("--"),
-        }
+        }?;
+        writer.write(")")?;
+        Ok(())
     }
 }