diff --git a/stm32h735g-dk/CMakeLists.txt b/stm32h735g-dk/CMakeLists.txt
index 0c144e8..879ba98 100644
--- a/stm32h735g-dk/CMakeLists.txt
+++ b/stm32h735g-dk/CMakeLists.txt
@@ -45,7 +45,7 @@ function(try_download_prebuilt_slint_binary slint_version rust_target)
         set(github_release "${slint_version}")
     endif()
 
-    if(WIN32)    
+    if(CMAKE_HOST_SYSTEM_NAME MATCHES "Windows")
         if(CMAKE_SIZEOF_VOID_P EQUAL 8)
             set(package_system_name win64)
         else()
diff --git a/stm32h747i-disco/CM7/CMakeLists.txt b/stm32h747i-disco/CM7/CMakeLists.txt
index fd5e975..c749303 100644
--- a/stm32h747i-disco/CM7/CMakeLists.txt
+++ b/stm32h747i-disco/CM7/CMakeLists.txt
@@ -47,7 +47,7 @@ function(try_download_prebuilt_slint_binary slint_version rust_target)
         set(github_release "${slint_version}")
     endif()
 
-    if(WIN32)    
+    if(CMAKE_HOST_SYSTEM_NAME MATCHES "Windows")
         if(CMAKE_SIZEOF_VOID_P EQUAL 8)
             set(package_system_name win64)
         else()