diff --git a/cmake/archdetect.cmake b/cmake/archdetect.cmake
index b988064a..bd0d088c 100644
--- a/cmake/archdetect.cmake
+++ b/cmake/archdetect.cmake
@@ -44,7 +44,7 @@ if (USE_CPU_NATIVE)
         endif()
     elseif (CMAKE_COMPILER_IS_CLANG)
         if (ARCH_IA32 OR ARCH_X86_64)
-            set(GNUCC_ARCH x86_64_v2)
+            set(GNUCC_ARCH x86-64-v2)
             set(TUNE_FLAG generic)
         elseif(ARCH_AARCH64)
             if (BUILD_SVE2_BITPERM)
@@ -69,7 +69,7 @@ if (USE_CPU_NATIVE)
 else()
     if (SIMDE_BACKEND)
         if (ARCH_IA32 OR ARCH_X86_64)
-            set(GNUCC_ARCH x86_64_v2)
+            set(GNUCC_ARCH x86-64-v2)
             set(TUNE_FLAG generic)
         elseif(ARCH_AARCH64)
             set(GNUCC_ARCH armv8-a)