diff --git a/uppsrc/Core/SSL/AES.cpp b/uppsrc/Core/SSL/AES.cpp
index 2ac99e2e5..49e90c3f7 100644
--- a/uppsrc/Core/SSL/AES.cpp
+++ b/uppsrc/Core/SSL/AES.cpp
@@ -1,5 +1,7 @@
 #include "SSL.h"
 
+#ifdef EVP_PKEY_KEYMGMT
+
 // Encrypts a string using AES-256-GCM with PBKDF2 key derivation
 // Format of encrypted data: "GCMv1__" + salt(16) + iv(12) + ciphertext + tag(16)
 
@@ -331,4 +333,6 @@ bool AES256Decrypt(Stream& in, const String& password, Stream& out, Gate<int64,
 }
 	
 	
-}
\ No newline at end of file
+}
+
+#endif
\ No newline at end of file
diff --git a/uppsrc/Core/SSL/SSL.h b/uppsrc/Core/SSL/SSL.h
index 4e2824301..4adc473c7 100644
--- a/uppsrc/Core/SSL/SSL.h
+++ b/uppsrc/Core/SSL/SSL.h
@@ -143,6 +143,8 @@ String SslToString(X509_NAME *name);
 Date   Asn1ToDate(ASN1_STRING *time);
 String Asn1ToString(ASN1_STRING *s);
 
+#ifdef EVP_PKEY_KEYMGMT
+
 constexpr const int AES_GCM_MIN_ITERATION     = 10000;
 constexpr const int AES_GCM_MAX_ITERATION     = 1000000;
 constexpr const int AES_GCM_DEFAULT_ITERATION = 100000;
@@ -183,4 +185,6 @@ bool AES256Decrypt(Stream& in, const String& password, Stream& out, Gate<int64,
 // Secure buffer
 #include "Buffer.hpp"
 
+#endif
+
 }