diff --git a/DDrawCompat/Win32/MemoryManagement.cpp b/DDrawCompat/Win32/MemoryManagement.cpp
index ce53367..63cbb14 100644
--- a/DDrawCompat/Win32/MemoryManagement.cpp
+++ b/DDrawCompat/Win32/MemoryManagement.cpp
@@ -8,6 +8,49 @@ namespace
 {
 	void limitTo2Gb(SIZE_T& mem);
 
+	BOOL WINAPI getDiskFreeSpaceW(LPCWSTR lpRootPathName, LPDWORD lpSectorsPerCluster, LPDWORD lpBytesPerSector,
+		LPDWORD lpNumberOfFreeClusters, LPDWORD lpTotalNumberOfClusters)
+	{
+		LOG_FUNC("GetDiskFreeSpaceW", lpRootPathName, lpSectorsPerCluster, lpBytesPerSector,
+			lpNumberOfFreeClusters, lpTotalNumberOfClusters);
+
+		DWORD sectorsPerCluster = 0;
+		DWORD bytesPerSector = 0;
+		DWORD numberOfFreeClusters = 0;
+		DWORD totalNumberOfClusters = 0;
+
+		if (!lpSectorsPerCluster)
+		{
+			lpSectorsPerCluster = &sectorsPerCluster;
+		}
+		if (!lpBytesPerSector)
+		{
+			lpBytesPerSector = &bytesPerSector;
+		}
+		if (!lpNumberOfFreeClusters)
+		{
+			lpNumberOfFreeClusters = &numberOfFreeClusters;
+		}
+		if (!lpTotalNumberOfClusters)
+		{
+			lpTotalNumberOfClusters = &totalNumberOfClusters;
+		}
+
+		auto result = CALL_ORIG_FUNC(GetDiskFreeSpaceW)(lpRootPathName, lpSectorsPerCluster, lpBytesPerSector,
+			lpNumberOfFreeClusters, lpTotalNumberOfClusters);
+		if (result)
+		{
+			const DWORD bytesPerCluster = *lpSectorsPerCluster * *lpBytesPerSector;
+			if (0 != bytesPerCluster)
+			{
+				const DWORD maxClusters = INT_MAX / bytesPerCluster;
+				*lpNumberOfFreeClusters = std::min(*lpNumberOfFreeClusters, maxClusters);
+				*lpTotalNumberOfClusters = std::min(*lpTotalNumberOfClusters, maxClusters);
+			}
+		}
+		return LOG_RESULT(result);
+	}
+
 	void WINAPI globalMemoryStatus(LPMEMORYSTATUS lpBuffer)
 	{
 		LOG_FUNC("GlobalMemoryStatus", lpBuffer);
@@ -35,6 +78,7 @@ namespace Win32
 	{
 		void installHooks()
 		{
+			HOOK_FUNCTION(kernel32, GetDiskFreeSpaceW, getDiskFreeSpaceW);
 			HOOK_FUNCTION(kernel32, GlobalMemoryStatus, globalMemoryStatus);
 		}
 	}