diff --git a/client/TracyDxt1.cpp b/client/TracyDxt1.cpp
index df8bccb9..0c66ac65 100644
--- a/client/TracyDxt1.cpp
+++ b/client/TracyDxt1.cpp
@@ -18,6 +18,11 @@
 #    include <intrin.h>
 #  else
 #    include <x86intrin.h>
+#    ifdef __CYGWIN__
+#      ifndef _mm256_cvtsi256_si32
+#        define _mm256_cvtsi256_si32( v ) ( _mm_cvtsi128_si32( _mm256_castsi256_si128( v ) ) )
+#      endif
+#    endif
 #  endif
 #endif