diff --git a/src/Portable.Licensing/License.cs b/src/Portable.Licensing/License.cs
index 9da4dda..44b502a 100644
--- a/src/Portable.Licensing/License.cs
+++ b/src/Portable.Licensing/License.cs
@@ -245,6 +245,10 @@ public bool VerifySignature(string publicKey)
 
                 return signer.VerifySignature(Convert.FromBase64String(signTag.Value));
             }
+            catch
+            {
+                return false;
+            }
             finally
             {
                 xmlData.Add(signTag);