diff --git a/dist/index.js b/dist/index.js
index 11c8d165..34e6bb8c 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -120786,17 +120786,15 @@ async function getOpamLocalPackages() {
 
 async function installer() {
     const platform = getPlatform();
-    const numberOfProcessors = external_node_os_namespaceObject.cpus().length;
-    const isDebug = lib_core.isDebug();
     lib_core.exportVariable("OPAMCLI", "2.0");
     lib_core.exportVariable("OPAMCOLOR", "always");
     lib_core.exportVariable("OPAMERRLOGLEN", 0);
-    lib_core.exportVariable("OPAMJOBS", numberOfProcessors);
+    lib_core.exportVariable("OPAMJOBS", external_node_os_namespaceObject.cpus().length);
     lib_core.exportVariable("OPAMPRECISETRACKING", 1);
     // [todo] remove this line once we unlock opam 2.2
     // https://github.com/ocaml/opam/issues/3447
     lib_core.exportVariable("OPAMSOLVERTIMEOUT", 1000);
-    lib_core.exportVariable("OPAMVERBOSE", isDebug);
+    lib_core.exportVariable("OPAMVERBOSE", lib_core.isDebug() ? "n" : 0);
     lib_core.exportVariable("OPAMYES", 1);
     if (platform === Platform.Win32) {
         const opamRoot = external_node_path_namespaceObject.join("D:", ".opam");
diff --git a/packages/setup-ocaml/src/installer.ts b/packages/setup-ocaml/src/installer.ts
index 65cea272..c6a18604 100644
--- a/packages/setup-ocaml/src/installer.ts
+++ b/packages/setup-ocaml/src/installer.ts
@@ -36,17 +36,15 @@ import { resolveCompiler } from "./version";
 
 export async function installer() {
   const platform = getPlatform();
-  const numberOfProcessors = os.cpus().length;
-  const isDebug = core.isDebug();
   core.exportVariable("OPAMCLI", "2.0");
   core.exportVariable("OPAMCOLOR", "always");
   core.exportVariable("OPAMERRLOGLEN", 0);
-  core.exportVariable("OPAMJOBS", numberOfProcessors);
+  core.exportVariable("OPAMJOBS", os.cpus().length);
   core.exportVariable("OPAMPRECISETRACKING", 1);
   // [todo] remove this line once we unlock opam 2.2
   // https://github.com/ocaml/opam/issues/3447
   core.exportVariable("OPAMSOLVERTIMEOUT", 1000);
-  core.exportVariable("OPAMVERBOSE", isDebug);
+  core.exportVariable("OPAMVERBOSE", core.isDebug() ? "n" : 0);
   core.exportVariable("OPAMYES", 1);
   if (platform === Platform.Win32) {
     const opamRoot = path.join("D:", ".opam");