diff --git a/dev-libs/botan/botan-1.10.17.ebuild b/dev-libs/botan/botan-1.10.17.ebuild
index afa4eff4aa19b..8d09da8321ab4 100644
--- a/dev-libs/botan/botan-1.10.17.ebuild
+++ b/dev-libs/botan/botan-1.10.17.ebuild
@@ -34,6 +34,7 @@ DEPEND="${RDEPEND}
 PATCHES=(
 	"${FILESDIR}/${PN}-1.10.15-c++11.patch"
 	"${FILESDIR}/${P}-build.patch"
+	"${FILESDIR}/${P}-libressl.patch"
 )
 
 src_prepare() {
diff --git a/dev-libs/botan/files/botan-1.10.17-libressl.patch b/dev-libs/botan/files/botan-1.10.17-libressl.patch
new file mode 100644
index 0000000000000..5913bfd304942
--- /dev/null
+++ b/dev-libs/botan/files/botan-1.10.17-libressl.patch
@@ -0,0 +1,40 @@
+From e61a5f56fb404db3655909be4ce23c3a816cbb60 Mon Sep 17 00:00:00 2001
+From: Alon Bar-Lev <alon.barlev@gmail.com>
+Date: Wed, 4 Oct 2017 22:16:31 +0300
+Subject: [PATCH] openssl: support libressl
+
+Signed-off-by: Alon Bar-Lev <alon.barlev@gmail.com>
+---
+ src/engine/openssl/ossl_bc.cpp | 2 +-
+ src/engine/openssl/ossl_md.cpp | 2 +-
+ 2 files changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/src/engine/openssl/ossl_bc.cpp b/src/engine/openssl/ossl_bc.cpp
+index 74660c7b5..cb184c202 100644
+--- a/src/engine/openssl/ossl_bc.cpp
++++ b/src/engine/openssl/ossl_bc.cpp
+@@ -8,7 +8,7 @@
+ #include <botan/internal/openssl_engine.h>
+ #include <openssl/evp.h>
+ 
+-#if OPENSSL_VERSION_NUMBER >= 0x10100000
++#if OPENSSL_VERSION_NUMBER >= 0x10100000 && !defined(LIBRESSL_VERSION_NUMBER)
+   #error "OpenSSL 1.1 API not supported in Botan 1.10, upgrade to 2.x"
+ #endif
+ 
+diff --git a/src/engine/openssl/ossl_md.cpp b/src/engine/openssl/ossl_md.cpp
+index 2fcb2b0e5..9c43d616e 100644
+--- a/src/engine/openssl/ossl_md.cpp
++++ b/src/engine/openssl/ossl_md.cpp
+@@ -8,7 +8,7 @@
+ #include <botan/internal/openssl_engine.h>
+ #include <openssl/evp.h>
+ 
+-#if OPENSSL_VERSION_NUMBER >= 0x10100000
++#if OPENSSL_VERSION_NUMBER >= 0x10100000 && !defined(LIBRESSL_VERSION_NUMBER)
+   #error "OpenSSL 1.1 API not supported in Botan 1.10, upgrade to 2.x"
+ #endif
+ 
+-- 
+2.13.6
+