diff --git a/pgpainless-core/src/main/java/org/pgpainless/key/info/KeyRingInfo.java b/pgpainless-core/src/main/java/org/pgpainless/key/info/KeyRingInfo.java
index 16b2086a..f94e1347 100644
--- a/pgpainless-core/src/main/java/org/pgpainless/key/info/KeyRingInfo.java
+++ b/pgpainless-core/src/main/java/org/pgpainless/key/info/KeyRingInfo.java
@@ -307,7 +307,7 @@ public class KeyRingInfo {
     public boolean isFullyDecrypted() {
         if (isSecretKey()) {
             for (PGPSecretKey secretKey : getSecretKeys()) {
-                if (secretKey.getKeyEncryptionAlgorithm() != SymmetricKeyAlgorithm.NULL.getAlgorithmId()) {
+                if (secretKey.getS2KUsage() != 0) {
                     return false;
                 }
             }