diff --git a/dlls/krnl386.exe16/global.c b/dlls/krnl386.exe16/global.c
index e66007784ee..0a8da28e99b 100644
--- a/dlls/krnl386.exe16/global.c
+++ b/dlls/krnl386.exe16/global.c
@@ -750,7 +750,7 @@ DWORD WINAPI GetFreeSpace16( UINT16 wFlags )
 {
     MEMORYSTATUS ms;
     GlobalMemoryStatus( &ms );
-    return ms.dwAvailVirtual;
+    return min( ms.dwAvailVirtual, MAXLONG );
 }
 
 /***********************************************************************