diff --git a/src/corelib/global/qsimd_p.h b/src/corelib/global/qsimd_p.h
index cb02b31990..21eaeeef93 100644
--- a/src/corelib/global/qsimd_p.h
+++ b/src/corelib/global/qsimd_p.h
@@ -236,7 +236,11 @@ asm(
 //
 // macOS's fat binaries support the "x86_64h" sub-architecture and the GNU libc
 // ELF loader also supports a "haswell/" subdir (e.g., /usr/lib/haswell).
-#  define QT_FUNCTION_TARGET_STRING_ARCH_HASWELL    "arch=haswell"
+#  if defined(Q_CC_CLANG)
+#    define QT_FUNCTION_TARGET_STRING_ARCH_HASWELL    "haswell"
+#  else
+#    define QT_FUNCTION_TARGET_STRING_ARCH_HASWELL    "arch=haswell"
+#  endif
 #  if defined(__AVX2__) && defined(__BMI__) && defined(__BMI2__) && defined(__F16C__) && \
     defined(__FMA__) && defined(__LZCNT__) && defined(__RDRND__)
 #    define __haswell__       1