diff --git a/src/sysinfo.cc b/src/sysinfo.cc
index a153b20cf..a27f6920c 100644
--- a/src/sysinfo.cc
+++ b/src/sysinfo.cc
@@ -353,6 +353,10 @@ std::vector<CPUInfo::CacheInfo> GetCacheSizesWindows() {
     C.size = static_cast<int>(cache.Size);
     C.type = "Unknown";
     switch (cache.Type) {
+      #ifdef NTDDI_WIN10_NI // Windows SDK version >= 10.0.26100.0
+      case CacheUnknown:
+        break;
+      #endif
       case CacheUnified:
         C.type = "Unified";
         break;