diff --git a/src/helpers.cr b/src/helpers.cr
index 4d6666ca..ef70c630 100644
--- a/src/helpers.cr
+++ b/src/helpers.cr
@@ -223,10 +223,15 @@ end
 def decrypt_signature(a)
   a = a.split("")
 
+  a = splice(a, 12)
+  a = splice(a, 18)
   a.reverse!
-  a.delete_at(0)
+  a.delete_at(0..2)
   a.reverse!
-  a = splice(a, 50)
+  a.delete_at(0..2)
+  a = splice(a, 69)
+  a.reverse!
+  a.delete_at(0..2)
 
   return a.join("")
 end