diff --git a/src/util/detect_arch.h b/src/util/detect_arch.h
index 166c4aea1d1..8fa4bded62a 100644
--- a/src/util/detect_arch.h
+++ b/src/util/detect_arch.h
@@ -58,7 +58,9 @@
 #define DETECT_ARCH_X86 1
 #endif
 
-#if defined(__x86_64__) /* gcc */ || defined(_M_X64) /* msvc */ || defined(_M_AMD64) /* msvc */ || defined(__x86_64) /* Sun cc */
+#if defined(__x86_64__) /* gcc */ || \
+    ((defined(_M_X64) || defined(_M_AMD64)) && !defined(_M_ARM64EC)) /* msvc */ || \
+    defined(__x86_64) /* Sun cc */
 #define DETECT_ARCH_X86_64 1
 #endif