diff --git a/src/script/script_error.cpp b/src/script/script_error.cpp
index ff84b30398..9870b150ef 100644
--- a/src/script/script_error.cpp
+++ b/src/script/script_error.cpp
@@ -87,7 +87,7 @@ std::string ScriptErrorString(const ScriptError serror)
         case SCRIPT_ERR_PUBKEYTYPE:
             return "Public key is neither compressed or uncompressed";
         case SCRIPT_ERR_CLEANSTACK:
-            return "Extra items left on stack after execution";
+            return "Stack size must be exactly one after execution";
         case SCRIPT_ERR_OP_CODESEPARATOR:
             return "Using OP_CODESEPARATOR";
         case SCRIPT_ERR_SIG_FINDANDDELETE: