diff --git a/samy.js b/samy.js
index 6fa8f98..9400e87 100644
--- a/samy.js
+++ b/samy.js
@@ -457,23 +457,28 @@ async function triggerInstall() {
     // 1. DattoRMM first
     const dattoCB = document.getElementById("installDattoRMM");
     if (dattoCB && dattoCB.checked) {
-      try {
-        const sub = Array.from(
-          document.querySelectorAll(".sub-option-installDattoRMM:checked")
-        ).map((x) => x.value);
-        const dropdown = document.getElementById("dattoDropdown");
-        const uid = dropdown?.value;
-        const name = dropdown?.selectedOptions?.[0]?.text || "Datto";
+      const sub = Array.from(
+        document.querySelectorAll(".sub-option-installDattoRMM:checked")
+      ).map((x) => x.value);
+      const dropdown = document.getElementById("dattoDropdown");
+      const uid = dropdown?.value;
+      const name = dropdown?.selectedOptions?.[0]?.text || "Datto";
 
-        await fetch("/installDattoRMM", {
-          method: "POST",
-          headers: { "Content-Type": "application/json" },
-          body: JSON.stringify({ checkedValues: sub, UID: uid, Name: name }),
-        });
-        logProgress("Install DattoRMM", true);
-      } catch (e) {
-        logProgress("Install DattoRMM", false);
-        console.error(e);
+      if (!uid) {
+        alert("Please select a Datto RMM site before running.");
+        logProgress("Install DattoRMM (no site selected)", false);
+      } else {
+        try {
+          await fetch("/installDattoRMM", {
+            method: "POST",
+            headers: { "Content-Type": "application/json" },
+            body: JSON.stringify({ checkedValues: sub, UID: uid, Name: name }),
+          });
+          logProgress("Install DattoRMM", true);
+        } catch (e) {
+          logProgress("Install DattoRMM", false);
+          console.error(e);
+        }
       }
     }