diff --git a/changes/bug26156 b/changes/bug26156
new file mode 100644
index 0000000000..dcb3ca6377
--- /dev/null
+++ b/changes/bug26156
@@ -0,0 +1,3 @@
+  o Minor bugfixes (compilation):
+    - Fix compilation when building with OpenSSL 1.1.0 with the
+      "no-deprecated" flag enabled. Fixes bug 26156; bugfix on 0.3.4.1-alpha.
diff --git a/src/common/aes.c b/src/common/aes.c
index f6b933374a..86f3472bfd 100644
--- a/src/common/aes.c
+++ b/src/common/aes.c
@@ -16,6 +16,7 @@
   #include <ws2tcpip.h>
 #endif
 
+#include "compat_openssl.h"
 #include <openssl/opensslv.h>
 #include "crypto_openssl_mgt.h"