diff --git a/src/core/AsyncLogWriter.cpp b/src/core/AsyncLogWriter.cpp
index 95da47acb..a005ec3e6 100644
--- a/src/core/AsyncLogWriter.cpp
+++ b/src/core/AsyncLogWriter.cpp
@@ -22,6 +22,13 @@
 #define NOMINMAX
 #endif
 #include <windows.h>
+#if defined(__MINGW32__)
+// This mingw-w64 header snapshot doesn't declare SetThreadDescription even
+// though kernel32.dll exports it (Windows 10 1607+, MSVC's SDK already has
+// it). Widening _WIN32_WINNT doesn't help — the prototype is absent outright.
+extern "C" __declspec(dllimport) HRESULT WINAPI
+    SetThreadDescription(HANDLE hThread, PCWSTR lpThreadDescription);
+#endif
 #elif defined(__APPLE__)
 #include <pthread.h>
 #elif defined(__linux__)
diff --git a/src/core/SystemInfo.cpp b/src/core/SystemInfo.cpp
index d4cf6069a..db7252d8b 100644
--- a/src/core/SystemInfo.cpp
+++ b/src/core/SystemInfo.cpp
@@ -15,6 +15,13 @@
 #endif
 #include <windows.h>
 #include <tlhelp32.h>
+#if defined(__MINGW32__)
+// This mingw-w64 header snapshot doesn't declare GetThreadDescription even
+// though kernel32.dll exports it (Windows 10 1607+, MSVC's SDK already has
+// it). Widening _WIN32_WINNT doesn't help — the prototype is absent outright.
+extern "C" __declspec(dllimport) HRESULT WINAPI
+    GetThreadDescription(HANDLE hThread, PWSTR* ppszThreadDescription);
+#endif
 #elif defined(Q_OS_MAC)
 #include <mach/mach.h>
 #include <mach/thread_act.h>
diff --git a/src/core/ThreadName.cpp b/src/core/ThreadName.cpp
index acb5666a4..866432563 100644
--- a/src/core/ThreadName.cpp
+++ b/src/core/ThreadName.cpp
@@ -8,6 +8,13 @@
 #endif
 #include <windows.h>
 #include <cstdlib>
+#if defined(__MINGW32__)
+// This mingw-w64 header snapshot doesn't declare SetThreadDescription even
+// though kernel32.dll exports it (Windows 10 1607+, MSVC's SDK already has
+// it). Widening _WIN32_WINNT doesn't help — the prototype is absent outright.
+extern "C" __declspec(dllimport) HRESULT WINAPI
+    SetThreadDescription(HANDLE hThread, PCWSTR lpThreadDescription);
+#endif
 #elif defined(__APPLE__)
 #include <pthread.h>
 #elif defined(__linux__)