diff --git a/.cmake/Modules/Subprojects.cmake b/.cmake/Modules/Subprojects.cmake
index 7e79603..3bdb14f 100644
--- a/.cmake/Modules/Subprojects.cmake
+++ b/.cmake/Modules/Subprojects.cmake
@@ -44,6 +44,9 @@ function (cr_add_subproject _NAME)
     if (NOT ARGS_GENERATOR)
       set (ARGS_GENERATOR ${CMAKE_GENERATOR})
     endif ()
+    if (CMAKE_TOOLCHAIN_FILE)
+      set (ARGS_OPTS ${ARGS_OPTS} "-DCMAKE_TOOLCHAIN_FILE=${CMAKE_TOOLCHAIN_FILE}")
+    endif ()
     set (build_cmds
       CONFIGURE_COMMAND ${CMAKE_COMMAND} <SOURCE_DIR>
         -DCMAKE_INSTALL_PREFIX=${install_prefix}
@@ -78,7 +81,7 @@ function (cr_add_subproject _NAME)
 
   if (WIN32)
     set ("${_NAME}_SHARED_LIB" "${install_prefix}/lib/${_NAME}.dll" PARENT_SCOPE)
-    if (ARGS_GENERATOR MATCHES "(MSYS|MinGW) Makefiles")
+    if (ARGS_GENERATOR MATCHES "(Unix|MSYS|MinGW) Makefiles")
       set ("${_NAME}_STATIC_LIB" "${install_prefix}/lib/lib${_NAME}.a" PARENT_SCOPE)
     else ()
       set ("${_NAME}_STATIC_LIB" "${install_prefix}/lib/${_NAME}.lib" PARENT_SCOPE)
diff --git a/samples/timeout.c b/samples/timeout.c
index db37bf0..6876477 100644
--- a/samples/timeout.c
+++ b/samples/timeout.c
@@ -1,7 +1,7 @@
 #include <criterion/criterion.h>
 
 #ifdef _WIN32
-# include <Windows.h>
+# include <windows.h>
 # define sleep(x) Sleep(x * 1000)
 #else
 # include <unistd.h>
diff --git a/src/compat/time.c b/src/compat/time.c
index 63c4246..18dc07e 100644
--- a/src/compat/time.c
+++ b/src/compat/time.c
@@ -28,7 +28,7 @@ extern __attribute__ ((weak)) int clock_gettime(clockid_t, struct timespec *);
 #elif defined(_WIN32) || defined(__CYGWIN__)
 # define VC_EXTRALEAN
 # define WIN32_LEAN_AND_MEAN
-# include <Windows.h>
+# include <windows.h>
 #endif
 
 bool can_measure_time(void) {