diff --git a/lib/virtual/boot_class.rb b/lib/virtual/boot_class.rb
index 71390dcd..e62b216b 100644
--- a/lib/virtual/boot_class.rb
+++ b/lib/virtual/boot_class.rb
@@ -47,7 +47,7 @@ module Virtual
       padded_words(3)
     end
     def to_s
-      inspect
+      inspect[0...300]
     end
 
   end
diff --git a/lib/virtual/object.rb b/lib/virtual/object.rb
index a4872e9f..4a5853e9 100644
--- a/lib/virtual/object.rb
+++ b/lib/virtual/object.rb
@@ -41,7 +41,7 @@ module Virtual
       Sof::Writer.write(self)
     end
     def to_s
-      inspect
+      inspect[0..300]
     end
     def mem_length
       raise "abstract #{self.class}"