diff --git a/packages/node_modules/@node-red/nodes/core/function/10-switch.html b/packages/node_modules/@node-red/nodes/core/function/10-switch.html
index ebe22d65c..c10a53827 100644
--- a/packages/node_modules/@node-red/nodes/core/function/10-switch.html
+++ b/packages/node_modules/@node-red/nodes/core/function/10-switch.html
@@ -103,6 +103,7 @@
             } else if (type === "istype") {
                 r.v = rule.find(".node-input-rule-type-value").typedInput('type');
                 r.vt = rule.find(".node-input-rule-type-value").typedInput('type');
+                r.vt = (r.vt === "number") ? "num" : "str";
             } else if (type === "jsonata_exp") {
                 r.v = rule.find(".node-input-rule-exp-value").typedInput('value');
                 r.vt = rule.find(".node-input-rule-exp-value").typedInput('type');