diff --git a/tools/verify-rust-version.js b/tools/verify-rust-version.js
index 0d6cf66..85adc60 100644
--- a/tools/verify-rust-version.js
+++ b/tools/verify-rust-version.js
@@ -18,8 +18,6 @@ const cargo_toml_rust_version = cargo_toml_src.split('\n').filter(l => l.startsW
 
 console.log(`Rust version: ${cargo_toml_rust_version}`);
 
-let error = false;
-
 for (const file of files) {
     const file_content = fs.readFileSync(file, 'UTF8').toString();
     const matches1 = file_content.match(re1);
@@ -29,7 +27,7 @@ for (const file of files) {
         for (const match of matches1) {
             if (match !== cargo_toml_rust_version.substring(0, 4)) {
                 console.error(`Found reference to version ${match}, expected ${cargo_toml_rust_version} in file ${file}`);
-                error = true;
+                proc.exitCode = 1; // Non zero code indicates error
             }
         }
     }
@@ -38,11 +36,9 @@ for (const file of files) {
         for (const match of matches2) {
             if (match !== cargo_toml_rust_version) {
                 console.error(`Found reference to version ${match}, expected ${cargo_toml_rust_version} in ${file}`);
-                error = true;
+                proc.exitCode = 1; // Non zero code indicates error
             }
         }
     }
 
 }
-
-proc.exit(error);