diff --git a/include/internal/refcount.h b/include/internal/refcount.h
index 75d70a6418b72be9f71682882a249cb39b9d4a45..399e1248ccc50c44a82116931a51b59369f7bdfd 100644
--- a/include/internal/refcount.h
+++ b/include/internal/refcount.h
@@ -79,7 +79,7 @@ static __inline__ int CRYPTO_DOWN_REF(int *val, int *ret, void *lock)
 
 typedef volatile int CRYPTO_REF_COUNT;
 
-#  if (defined(_M_ARM) && _M_ARM>=7) || defined(_M_ARM64)
+#  if (defined(_M_ARM) && _M_ARM>=7 && !defined(_WIN32_WCE)) || defined(_M_ARM64)
 #   include <intrin.h>
 #   if defined(_M_ARM64) && !defined(_ARM_BARRIER_ISH)
 #    define _ARM_BARRIER_ISH _ARM64_BARRIER_ISH
@@ -99,7 +99,17 @@ static __inline int CRYPTO_DOWN_REF(volatile int *val, int *ret, void *lock)
     return 1;
 }
 #  else
-#   pragma intrinsic(_InterlockedExchangeAdd)
+#   if !defined(_WIN32_WCE)
+#    pragma intrinsic(_InterlockedExchangeAdd)
+#   else
+#    if _WIN32_WCE >= 0x600
+      extern long __cdecl _InterlockedExchangeAdd(long volatile*, long);
+#    else
+      // under Windows CE we still have old-style Interlocked* functions
+      extern long __cdecl InterlockedExchangeAdd(long volatile*, long);
+#     define _InterlockedExchangeAdd InterlockedExchangeAdd
+#    endif
+#   endif
 
 static __inline int CRYPTO_UP_REF(volatile int *val, int *ret, void *lock)
 {
diff --git a/include/internal/tsan_assist.h b/include/internal/tsan_assist.h
index 38ba0c7ebbf3f0ba62d3b43451d4a5f163ef083b..d41ebb341a422ab04b63018a12291ce68c230081 100644
--- a/include/internal/tsan_assist.h
+++ b/include/internal/tsan_assist.h
@@ -77,7 +77,7 @@
 
 #elif defined(_MSC_VER) && _MSC_VER>=1200 \
       && (defined(_M_IX86) || defined(_M_AMD64) || defined(_M_X64) || \
-          defined(_M_ARM64) || (defined(_M_ARM) && _M_ARM >= 7))
+          defined(_M_ARM64) || (defined(_M_ARM) && _M_ARM >= 7 && !defined(_WIN32_WCE)))
 /*
  * There is subtle dependency on /volatile:<iso|ms> command-line option.
  * "ms" implies same semantic as memory_order_acquire for loads and