diff --git a/src/Context.cc b/src/Context.cc
index 44fe28fd..10d9fb21 100644
--- a/src/Context.cc
+++ b/src/Context.cc
@@ -221,6 +221,12 @@ Context::Context(bool standalone, int argc, char** argv, const KeyVals& options)
   if (op->getAsBool(PREF_DISABLE_IPV6)) {
     SocketCore::setProtocolFamily(AF_INET);
   }
+#ifdef _WIN32
+  if (op->getAsBool(PREF_DISABLE_SLEEP)) {
+    if (!SetThreadExecutionState(ES_CONTINUOUS | ES_SYSTEM_REQUIRED))
+		A2_LOG_WARN("--disable-sleep-until-finished: Failed to disable sleep mode.");
+  }
+#endif // _WIN32
   SocketCore::setIpDscp(op->getAsInt(PREF_DSCP));
   SocketCore::setSocketRecvBufferSize(
       op->getAsInt(PREF_SOCKET_RECV_BUFFER_SIZE));
@@ -313,6 +319,11 @@ Context::Context(bool standalone, int argc, char** argv, const KeyVals& options)
     reqinfo = std::make_shared<MultiUrlRequestInfo>(std::move(requestGroups),
                                                     op, uriListParser);
   }
+#ifdef _WIN32
+  if (op->getAsBool(PREF_DISABLE_SLEEP)) {
+    SetThreadExecutionState(ES_CONTINUOUS);
+  }
+#endif // _WIN32
 }
 
 Context::~Context() = default;
diff --git a/src/OptionHandlerFactory.cc b/src/OptionHandlerFactory.cc
index 000426b6..7f99c092 100644
--- a/src/OptionHandlerFactory.cc
+++ b/src/OptionHandlerFactory.cc
@@ -736,6 +736,14 @@ std::vector<OptionHandler*> OptionHandlerFactory::createOptionHandlers()
     op->addTag(TAG_ADVANCED);
     handlers.push_back(op);
   }
+#if _WIN32
+  {
+    OptionHandler* op(new BooleanOptionHandler(
+        PREF_DISABLE_SLEEP, TEXT_DISABLE_SLEEP, A2_V_FALSE, OptionHandler::OPT_ARG));
+    op->addTag(TAG_ADVANCED);
+    handlers.push_back(op);
+  }
+#endif // _WIN32
   {
     OptionHandler* op(new BooleanOptionHandler(
         PREF_RPC_ALLOW_ORIGIN_ALL, TEXT_RPC_ALLOW_ORIGIN_ALL, A2_V_FALSE,
diff --git a/src/main.cc b/src/main.cc
index f14cea6a..e38f47f0 100644
--- a/src/main.cc
+++ b/src/main.cc
@@ -38,6 +38,7 @@
 
 #ifdef __MINGW32__
 #  include <shellapi.h>
+#  include <winbase.h>
 #endif // __MINGW32__
 
 #include <aria2/aria2.h>
diff --git a/src/prefs.cc b/src/prefs.cc
index 2591b9f0..332d190f 100644
--- a/src/prefs.cc
+++ b/src/prefs.cc
@@ -334,6 +334,10 @@ PrefPtr PREF_SHOW_CONSOLE_READOUT = makePref("show-console-readout");
 PrefPtr PREF_STREAM_PIECE_SELECTOR = makePref("stream-piece-selector");
 // value: true | false
 PrefPtr PREF_TRUNCATE_CONSOLE_READOUT = makePref("truncate-console-readout");
+#ifdef _WIN32
+// value: true | false
+PrefPtr PREF_DISABLE_SLEEP = makePref("disable-sleep-until-finished");
+#endif // _WIN32
 // value: true | false
 PrefPtr PREF_PAUSE = makePref("pause");
 // value: default | full | hide
diff --git a/src/prefs.h b/src/prefs.h
index 338fd6e6..319a2fcb 100644
--- a/src/prefs.h
+++ b/src/prefs.h
@@ -287,6 +287,10 @@ extern PrefPtr PREF_SHOW_CONSOLE_READOUT;
 extern PrefPtr PREF_STREAM_PIECE_SELECTOR;
 // value: true | false
 extern PrefPtr PREF_TRUNCATE_CONSOLE_READOUT;
+#ifdef _WIN32
+// value: true | false
+extern PrefPtr PREF_DISABLE_SLEEP;
+#endif // _WIN32
 // value: true | false
 extern PrefPtr PREF_PAUSE;
 // value: default | full | hide
diff --git a/src/usage_text.h b/src/usage_text.h
index 08715436..4dea140a 100644
--- a/src/usage_text.h
+++ b/src/usage_text.h
@@ -884,6 +884,11 @@
 #define TEXT_TRUNCATE_CONSOLE_READOUT                                   \
   _(" --truncate-console-readout[=true|false] Truncate console readout to fit in\n"\
     "                              a single line.")
+#ifdef _WIN32
+#define TEXT_DISABLE_SLEEP \
+  _(" --disable-sleep-until-finished[=true|false] Disables sleep mode on Windows\n" \
+    "                              until downloads are finished.")
+#endif // _WIN32
 #define TEXT_PAUSE                              \
   _(" --pause[=true|false]         Pause download after added. This option is\n" \
     "                              effective only when --enable-rpc=true is given.")