diff --git a/CMakeLists.txt b/CMakeLists.txt
index a7da6b251..ca8dc79de 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -258,6 +258,9 @@ elseif(MSVC)
                     # warning C4548: expression before comma has no effect; expected expression with side-effect
                     /wd4548
 
+                    # warning C5051: attribute 'fallthrough' requires at least '/std:c++17'
+                    /wd5051
+
                     # Make sure WinDef.h does not define min and max macros which
                     # will conflict with std::min() and std::max().
                     /DNOMINMAX
diff --git a/opensubdiv/bfr/hash.cpp b/opensubdiv/bfr/hash.cpp
index 6dd874058..3ae573478 100644
--- a/opensubdiv/bfr/hash.cpp
+++ b/opensubdiv/bfr/hash.cpp
@@ -388,47 +388,47 @@ void SpookyHash::Short(
     {
     case 15:
     d += ((uint64)u.p8[14]) << 48;
-        // FALLTHRU
+        [[fallthrough]];
     case 14:
         d += ((uint64)u.p8[13]) << 40;
-        // FALLTHRU
+        [[fallthrough]];
     case 13:
         d += ((uint64)u.p8[12]) << 32;
-        // FALLTHRU
+        [[fallthrough]];
     case 12:
         d += u.p32[2];
         c += u.p64[0];
         break;
     case 11:
         d += ((uint64)u.p8[10]) << 16;
-        // FALLTHRU
+        [[fallthrough]];
     case 10:
         d += ((uint64)u.p8[9]) << 8;
-        // FALLTHRU
+        [[fallthrough]];
     case 9:
         d += (uint64)u.p8[8];
-        // FALLTHRU
+        [[fallthrough]];
     case 8:
         c += u.p64[0];
         break;
     case 7:
         c += ((uint64)u.p8[6]) << 48;
-        // FALLTHRU
+        [[fallthrough]];
     case 6:
         c += ((uint64)u.p8[5]) << 40;
-        // FALLTHRU
+        [[fallthrough]];
     case 5:
         c += ((uint64)u.p8[4]) << 32;
-        // FALLTHRU
+        [[fallthrough]];
     case 4:
         c += u.p32[0];
         break;
     case 3:
         c += ((uint64)u.p8[2]) << 16;
-        // FALLTHRU
+        [[fallthrough]];
     case 2:
         c += ((uint64)u.p8[1]) << 8;
-        // FALLTHRU
+        [[fallthrough]];
     case 1:
         c += (uint64)u.p8[0];
         break;