diff --git a/core/src/main/java/org/bitcoinj/core/Utils.java b/core/src/main/java/org/bitcoinj/core/Utils.java
index 6ccc748e..0489f956 100644
--- a/core/src/main/java/org/bitcoinj/core/Utils.java
+++ b/core/src/main/java/org/bitcoinj/core/Utils.java
@@ -609,4 +609,11 @@ public class Utils {
     public static boolean isMac() {
         return os == OS.MAC_OS;
     }
+
+    public static String toString(List<byte[]> stack) {
+        List<String> parts = new ArrayList<String>(stack.size());
+        for (byte[] push : stack)
+            parts.add('[' + HEX.encode(push) + ']');
+        return SPACE_JOINER.join(parts);
+    }
 }
diff --git a/core/src/main/java/org/bitcoinj/script/Script.java b/core/src/main/java/org/bitcoinj/script/Script.java
index f4cc0cb5..d099f9db 100644
--- a/core/src/main/java/org/bitcoinj/script/Script.java
+++ b/core/src/main/java/org/bitcoinj/script/Script.java
@@ -1567,9 +1567,11 @@ public class Script {
         
         if (stack.size() == 0)
             throw new ScriptException(ScriptError.SCRIPT_ERR_EVAL_FALSE, "Stack empty at end of script execution.");
-        
+
+        List<byte[]> stackCopy = new LinkedList<byte[]>(stack);
         if (!castToBool(stack.pollLast()))
-            throw new ScriptException(ScriptError.SCRIPT_ERR_EVAL_FALSE, "Script resulted in a non-true stack: " + stack);
+            throw new ScriptException(ScriptError.SCRIPT_ERR_EVAL_FALSE,
+                    "Script resulted in a non-true stack: " + Utils.toString(stackCopy));
 
         // P2SH is pay to script hash. It means that the scriptPubKey has a special form which is a valid
         // program but it has "useless" form that if evaluated as a normal program always returns true.
@@ -1597,8 +1599,10 @@ public class Script {
             if (p2shStack.size() == 0)
                 throw new ScriptException(ScriptError.SCRIPT_ERR_EVAL_FALSE, "P2SH stack empty at end of script execution.");
             
+            List<byte[]> p2shStackCopy = new LinkedList<byte[]>(p2shStack);
             if (!castToBool(p2shStack.pollLast()))
-                throw new ScriptException(ScriptError.SCRIPT_ERR_EVAL_FALSE, "P2SH script execution resulted in a non-true stack");
+                throw new ScriptException(ScriptError.SCRIPT_ERR_EVAL_FALSE,
+                        "P2SH script execution resulted in a non-true stack: " + Utils.toString(p2shStackCopy));
         }
     }