diff --git a/src/features/linter-provider.ts b/src/features/linter-provider.ts
index 9bef7c08..c279a404 100644
--- a/src/features/linter-provider.ts
+++ b/src/features/linter-provider.ts
@@ -33,11 +33,9 @@ export default class FortranLintingProvider {
      *
      * see also: https://gcc.gnu.org/onlinedocs/gcc/Environment-Variables.html
      */
-    const env = {
-      ...process.env,
-      LC_ALL: 'C'
-    };
-    if (process.platform == 'win32') {
+    const env = process.env;
+    env.LC_ALL = 'C';
+    if (process.platform === 'win32') {
       // Windows needs to know the path of other tools
       if (!env.Path.includes(path.dirname(command))) {
         env.Path = `${path.dirname(command)}${path.delimiter}${env.Path}`;