diff --git a/Source/cmStringCommand.cxx b/Source/cmStringCommand.cxx
index e5935b8c05..900854e0fd 100644
--- a/Source/cmStringCommand.cxx
+++ b/Source/cmStringCommand.cxx
@@ -1106,8 +1106,8 @@ bool HandleJSONCommand(std::vector<std::string> const& arguments,
         mode != "EQUAL"_s) {
       throw json_error(
         { "got an invalid mode '"_s, mode,
-          "', expected one of GET, GET_ARRAY, TYPE, MEMBER, MEMBERS,"
-          " LENGTH, REMOVE, SET, EQUAL"_s });
+          "', expected one of GET, TYPE, MEMBER, LENGTH, REMOVE, SET, "
+          " EQUAL"_s });
     }
 
     const auto& jsonstr = args.PopFront("missing json string argument"_s);
diff --git a/Tests/RunCMake/string/JSONWrongMode-stderr.txt b/Tests/RunCMake/string/JSONWrongMode-stderr.txt
index c70991b272..5668303849 100644
--- a/Tests/RunCMake/string/JSONWrongMode-stderr.txt
+++ b/Tests/RunCMake/string/JSONWrongMode-stderr.txt
@@ -1,5 +1,5 @@
 CMake Error at JSONWrongMode.cmake:1 \(string\):
   string sub-command JSON got an invalid mode 'FOO', expected one of GET,
-  GET_ARRAY, TYPE, MEMBER, MEMBERS, LENGTH, REMOVE, SET, EQUAL.
+  TYPE, MEMBER, LENGTH, REMOVE, SET, EQUAL.
 Call Stack \(most recent call first\):
   CMakeLists\.txt:[0-9]+ \(include\)