diff --git a/Telegram/SourceFiles/pspecific_linux.cpp b/Telegram/SourceFiles/pspecific_linux.cpp
index 324da58df..c5e153f89 100644
--- a/Telegram/SourceFiles/pspecific_linux.cpp
+++ b/Telegram/SourceFiles/pspecific_linux.cpp
@@ -1134,7 +1134,7 @@ void PsUpdateDownloader::unpackUpdate() {
 		return fatalFail();
 	}
 
-	RSA *pbKey = PEM_read_bio_RSAPublicKey(BIO_new_mem_buf(const_cast<char*>(UpdatesPublicKey), -1), 0, 0, 0);
+    RSA *pbKey = PEM_read_bio_RSAPublicKey(BIO_new_mem_buf(const_cast<char*>(DevChannel ? UpdatesPublicDevKey : UpdatesPublicKey), -1), 0, 0, 0);
 	if (!pbKey) {
 		LOG(("Update Error: cant read public rsa key!"));
 		return fatalFail();