diff --git a/src/Options.cpp b/src/Options.cpp
index 832ed09a..9d2e3504 100644
--- a/src/Options.cpp
+++ b/src/Options.cpp
@@ -38,6 +38,7 @@
 #include "donate.h"
 #include "net/Url.h"
 #include "Options.h"
+#include "Platform.h"
 #include "version.h"
 
 
@@ -154,34 +155,6 @@ static const char *algo_names[] = {
 };
 
 
-static char *defaultConfigName()
-{
-    size_t size = 512;
-    char *buf = new char[size];
-
-    if (uv_exepath(buf, &size) < 0) {
-        delete [] buf;
-        return nullptr;
-    }
-
-    if (size < 500) {
-#       ifdef WIN32
-        char *p = strrchr(buf, '\\');
-#       else
-        char *p = strrchr(buf, '/');
-#       endif
-
-        if (p) {
-            strcpy(p + 1, "config.json");
-            return buf;
-        }
-    }
-
-    delete [] buf;
-    return nullptr;
-}
-
-
 Options *Options::parse(int argc, char **argv)
 {
     Options *options = new Options(argc, argv);
@@ -241,9 +214,7 @@ Options::Options(int argc, char **argv) :
     }
 
     if (!m_pools[0]->isValid()) {
-        char *fileName = defaultConfigName();
-        parseConfig(fileName);
-        delete [] fileName;
+        parseConfig(Platform::defaultConfigName());
     }
 
     if (!m_pools[0]->isValid()) {
@@ -508,8 +479,18 @@ Url *Options::parseUrl(const char *arg) const
 
 void Options::parseConfig(const char *fileName)
 {
+    uv_fs_t req;
+    const int fd = uv_fs_open(uv_default_loop(), &req, fileName, O_RDONLY, 0644, nullptr);
+    if (fd < 0) {
+        fprintf(stderr, "unable to open %s: %s\n", fileName, uv_strerror(fd));
+        return;
+    }
+
     json_error_t err;
-    json_t *config = json_load_file(fileName, 0, &err);
+    json_t *config = json_loadfd(fd, 0, &err);
+
+    uv_fs_close(uv_default_loop(), &req, fd, nullptr);
+    uv_fs_req_cleanup(&req);
 
     if (!json_is_object(config)) {
         if (config) {
diff --git a/src/Platform.cpp b/src/Platform.cpp
index aa0c5706..57c655fa 100644
--- a/src/Platform.cpp
+++ b/src/Platform.cpp
@@ -22,7 +22,40 @@
  */
 
 
+#include <uv.h>
+
+
 #include "Platform.h"
 
 
-char *Platform::m_userAgent = nullptr;
+char *Platform::m_defaultConfigName = nullptr;
+char *Platform::m_userAgent         = nullptr;
+
+
+const char *Platform::defaultConfigName()
+{
+    size_t size = 520;
+
+    if (m_defaultConfigName == nullptr) {
+        m_defaultConfigName = new char[size];
+    }
+
+    if (uv_exepath(m_defaultConfigName, &size) < 0) {
+        return nullptr;
+    }
+
+    if (size < 500) {
+#       ifdef WIN32
+        char *p = strrchr(m_defaultConfigName, '\\');
+#       else
+        char *p = strrchr(m_defaultConfigName, '/');
+#       endif
+
+        if (p) {
+            strcpy(p + 1, "config.json");
+            return m_defaultConfigName;
+        }
+    }
+
+    return nullptr;
+}
diff --git a/src/Platform.h b/src/Platform.h
index cc6fd879..1c1d5ce9 100644
--- a/src/Platform.h
+++ b/src/Platform.h
@@ -28,6 +28,7 @@
 class Platform
 {
 public:
+    static const char *defaultConfigName();
     static void init();
     static void release();
     static void setProcessPriority(int priority);
@@ -36,6 +37,7 @@ public:
     static inline const char *userAgent() { return m_userAgent; }
 
 private:
+    static char *m_defaultConfigName;
     static char *m_userAgent;
 };
 
diff --git a/src/Platform_win.cpp b/src/Platform_win.cpp
index 7943b662..3d520586 100644
--- a/src/Platform_win.cpp
+++ b/src/Platform_win.cpp
@@ -81,6 +81,7 @@ void Platform::init()
 
 void Platform::release()
 {
+    delete [] m_defaultConfigName;
     delete [] m_userAgent;
 }