diff --git a/libEet/eetsigner.cpp b/libEet/eetsigner.cpp
index ef61ec4..0f3ff95 100644
--- a/libEet/eetsigner.cpp
+++ b/libEet/eetsigner.cpp
@@ -58,7 +58,7 @@ QString EetSigner::getCertificate()
 
     if (!m_bundle.certificateChain().isEmpty())
     {
-        return m_bundle.certificateChain().primary().toPEM();
+        return QString(m_bundle.certificateChain().primary().toDER().toBase64());
     }
 
     return "";