diff --git a/depends/tthread/fast_mutex.h b/depends/tthread/fast_mutex.h
index 4d4b7cc43..6627408e4 100644
--- a/depends/tthread/fast_mutex.h
+++ b/depends/tthread/fast_mutex.h
@@ -47,6 +47,7 @@ freely, subject to the following restrictions:
 #endif
 
 #if defined(_TTHREAD_WIN32_)
+  #define NOMINMAX
   #ifndef WIN32_LEAN_AND_MEAN
     #define WIN32_LEAN_AND_MEAN
     #define __UNDEF_LEAN_AND_MEAN
diff --git a/depends/tthread/tinythread.h b/depends/tthread/tinythread.h
index aed7b5856..d575bae33 100644
--- a/depends/tthread/tinythread.h
+++ b/depends/tthread/tinythread.h
@@ -67,6 +67,7 @@ freely, subject to the following restrictions:
 
 // Platform specific includes
 #if defined(_TTHREAD_WIN32_)
+  #define NOMINMAX
   #ifndef WIN32_LEAN_AND_MEAN
     #define WIN32_LEAN_AND_MEAN
     #define __UNDEF_LEAN_AND_MEAN