diff --git a/gral_windows.cpp b/gral_windows.cpp
index d5ea23d..9013168 100644
--- a/gral_windows.cpp
+++ b/gral_windows.cpp
@@ -1126,9 +1126,9 @@ void gral_file_write(gral_file *file, void const *buffer, size_t size) {
 }
 
 size_t gral_file_get_size(gral_file *file) {
-	DWORD size_high;
-	DWORD size_low = GetFileSize(file, &size_high);
-	return (DWORD64)size_high << 32 | size_low;
+	LARGE_INTEGER size;
+	GetFileSizeEx(file, &size);
+	return size.QuadPart;
 }
 
 void *gral_file_map(gral_file *file, size_t size) {
@@ -1179,7 +1179,7 @@ void gral_directory_remove(char const *path) {
 static double get_frequency() {
 	LARGE_INTEGER frequency;
 	QueryPerformanceFrequency(&frequency);
-	return frequency.QuadPart;
+	return (double)frequency.QuadPart;
 }
 
 double gral_time_get_monotonic() {