diff -ruN a/lib/alg-yescrypt-opt.c b/lib/alg-yescrypt-opt.c
--- a/lib/alg-yescrypt-opt.c	2025-11-05 03:49:40.000000000 -0600
+++ b/lib/alg-yescrypt-opt.c	2026-05-29 16:10:57.694185418 -0500
@@ -464,7 +464,8 @@
 #endif
 
 #if defined(__x86_64__) && \
-    __GNUC__ == 4 && __GNUC_MINOR__ < 6 && !defined(__ICC)
+    __GNUC__ == 4 && __GNUC_MINOR__ < 6 && !defined(__clang__) && \
+    !defined(__ICC)
 #ifdef __AVX__
 #define MOVQ "vmovq"
 #else