diff --git a/CMakeLists.txt b/CMakeLists.txt
index 12ebc4f8b..ce0963827 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -352,6 +352,7 @@ if (WIN32)
     target_link_libraries(shadps4 PRIVATE mincore winpthread clang_rt.builtins-x86_64.lib)
     add_definitions(-D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_DEPRECATE -D_SCL_SECURE_NO_WARNINGS)
     add_definitions(-DNOMINMAX -DWIN32_LEAN_AND_MEAN)
+    add_definitions(-D_TIMESPEC_DEFINED) #needed for conflicts with time.h of windows.h
 endif()
 
 if(WIN32)
diff --git a/src/core/hle/libraries/libc/libc_cxa.h b/src/core/hle/libraries/libc/libc_cxa.h
index 30d61a509..e33dd32fe 100644
--- a/src/core/hle/libraries/libc/libc_cxa.h
+++ b/src/core/hle/libraries/libc/libc_cxa.h
@@ -2,7 +2,6 @@
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #pragma once
-#define _TIMESPEC_DEFINED
 
 #include <pthread.h>
 #include "common/types.h"
diff --git a/src/core/hle/libraries/libkernel/thread_management.h b/src/core/hle/libraries/libkernel/thread_management.h
index 203ed872e..83e1a58d4 100644
--- a/src/core/hle/libraries/libkernel/thread_management.h
+++ b/src/core/hle/libraries/libkernel/thread_management.h
@@ -2,7 +2,6 @@
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #pragma once
-#define _TIMESPEC_DEFINED
 
 #include <atomic>
 #include <mutex>