diff --git a/out/NsisUpdater.js b/out/NsisUpdater.js
index 6fb70b4275a59741d28aecc389c2736909130a3e..498e59ebbeb5e8648a6363b782d1a9d3ef63a8e7 100644
--- a/out/NsisUpdater.js
+++ b/out/NsisUpdater.js
@@ -104,7 +104,9 @@ class NsisUpdater extends BaseUpdater_1.BaseUpdater {
             this.dispatchError(new Error("No update filepath provided, can't quit and install"));
             return false;
         }
-        const args = ["--updated"];
+        // OpenCode: skip NSIS's CRC check of the whole installer, about 0.5 s for 230 MB. The updater already verified
+        // the download's SHA-512; manual installs keep the check. Must come before /D=.
+        const args = ["--updated", "/NCRC"];
         if (options.isSilent) {
             args.push("/S");
         }