diff --git a/CHANGELOG.md b/CHANGELOG.md
index a4eb3a07..4655cf34 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,6 @@
+# v2.15.3-beta
+- [#1014](https://github.com/xmrig/xmrig/issues/1014) Fixed regression, default value for `algo` option was not applied.
+
 # v2.15.2-beta
 - [#1010](https://github.com/xmrig/xmrig/pull/1010#issuecomment-482632107) Added daemon support (solo mining).
 - [#1012](https://github.com/xmrig/xmrig/pull/1012) Fixed compatibility with clang 9.
diff --git a/src/base/kernel/config/BaseConfig.cpp b/src/base/kernel/config/BaseConfig.cpp
index b2166240..af2418aa 100644
--- a/src/base/kernel/config/BaseConfig.cpp
+++ b/src/base/kernel/config/BaseConfig.cpp
@@ -160,7 +160,7 @@ bool xmrig::BaseConfig::read(const IJsonReader &reader, const char *fileName)
     m_http.load(chain.getObject("http"));
 #   endif
 
-    m_algorithm.parseAlgorithm(reader.getString("algo"));
+    m_algorithm.parseAlgorithm(reader.getString("algo", "cn"));
 
     m_pools.load(reader.getArray("pools"));
     m_pools.setDonateLevel(reader.getInt("donate-level", kDefaultDonateLevel));
diff --git a/src/version.h b/src/version.h
index 60080720..0c9b970a 100644
--- a/src/version.h
+++ b/src/version.h
@@ -28,7 +28,7 @@
 #define APP_ID        "xmrig"
 #define APP_NAME      "XMRig"
 #define APP_DESC      "XMRig CPU miner"
-#define APP_VERSION   "2.15.2-beta"
+#define APP_VERSION   "2.15.3-beta"
 #define APP_DOMAIN    "xmrig.com"
 #define APP_SITE      "www.xmrig.com"
 #define APP_COPYRIGHT "Copyright (C) 2016-2019 xmrig.com"
@@ -36,7 +36,7 @@
 
 #define APP_VER_MAJOR  2
 #define APP_VER_MINOR  15
-#define APP_VER_PATCH  2
+#define APP_VER_PATCH  3
 
 #ifdef _MSC_VER
 #   if (_MSC_VER >= 1910)