diff --git a/src/main/java/fr/xephi/authme/security/crypts/BCRYPT.java b/src/main/java/fr/xephi/authme/security/crypts/BCRYPT.java
index 5cfa87f07..847e99518 100644
--- a/src/main/java/fr/xephi/authme/security/crypts/BCRYPT.java
+++ b/src/main/java/fr/xephi/authme/security/crypts/BCRYPT.java
@@ -395,7 +395,7 @@ public class BCRYPT implements EncryptionMethod {
             off = 3;
         else {
             minor = salt.charAt(2);
-            if (minor != 'a' || salt.charAt(3) != '$')
+            if (minor < 'a' || minor > 'z' || salt.charAt(3) != '$')
                 throw new IllegalArgumentException("Invalid salt revision");
             off = 4;
         }