diff --git a/packages/lib/constants/crypto.ts b/packages/lib/constants/crypto.ts
index 40d3ef113..102e9d5d4 100644
--- a/packages/lib/constants/crypto.ts
+++ b/packages/lib/constants/crypto.ts
@@ -2,14 +2,16 @@ export const DOCUMENSO_ENCRYPTION_KEY = process.env.NEXT_PRIVATE_ENCRYPTION_KEY;
 
 export const DOCUMENSO_ENCRYPTION_SECONDARY_KEY = process.env.NEXT_PRIVATE_ENCRYPTION_SECONDARY_KEY;
 
-if (!DOCUMENSO_ENCRYPTION_KEY || !DOCUMENSO_ENCRYPTION_SECONDARY_KEY) {
-  throw new Error('Missing DOCUMENSO_ENCRYPTION_KEY or DOCUMENSO_ENCRYPTION_SECONDARY_KEY keys');
-}
+if (typeof window === 'undefined') {
+  if (!DOCUMENSO_ENCRYPTION_KEY || !DOCUMENSO_ENCRYPTION_SECONDARY_KEY) {
+    throw new Error('Missing DOCUMENSO_ENCRYPTION_KEY or DOCUMENSO_ENCRYPTION_SECONDARY_KEY keys');
+  }
 
-if (DOCUMENSO_ENCRYPTION_KEY === DOCUMENSO_ENCRYPTION_SECONDARY_KEY) {
-  throw new Error(
-    'DOCUMENSO_ENCRYPTION_KEY and DOCUMENSO_ENCRYPTION_SECONDARY_KEY cannot be equal',
-  );
+  if (DOCUMENSO_ENCRYPTION_KEY === DOCUMENSO_ENCRYPTION_SECONDARY_KEY) {
+    throw new Error(
+      'DOCUMENSO_ENCRYPTION_KEY and DOCUMENSO_ENCRYPTION_SECONDARY_KEY cannot be equal',
+    );
+  }
 }
 
 if (DOCUMENSO_ENCRYPTION_KEY === 'CAFEBABE') {