diff --git a/src/script/script_error.cpp b/src/script/script_error.cpp
index a6707638e46..b0e7a6e10ec 100644
--- a/src/script/script_error.cpp
+++ b/src/script/script_error.cpp
@@ -117,6 +117,8 @@ std::string ScriptErrorString(const ScriptError serror)
             return "Using OP_CODESEPARATOR in non-witness script";
         case SCRIPT_ERR_SIG_FINDANDDELETE:
             return "Signature is found in scriptCode";
+        case SCRIPT_ERR_SCRIPTNUM:
+            return "Script number overflowed or is non-minimally encoded";
         case SCRIPT_ERR_UNKNOWN_ERROR:
         case SCRIPT_ERR_ERROR_COUNT:
         default: break;
diff --git a/src/script/script_error.h b/src/script/script_error.h
index 58ac7db5393..23de3b1758e 100644
--- a/src/script/script_error.h
+++ b/src/script/script_error.h
@@ -14,6 +14,7 @@ typedef enum ScriptError_t
     SCRIPT_ERR_UNKNOWN_ERROR,
     SCRIPT_ERR_EVAL_FALSE,
     SCRIPT_ERR_OP_RETURN,
+    SCRIPT_ERR_SCRIPTNUM,
 
     /* Max sizes */
     SCRIPT_ERR_SCRIPT_SIZE,