diff --git a/CMakeLists.txt b/CMakeLists.txt
index 27b07b7..8e322ae 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -21,7 +21,7 @@ message(STATUS "System processor: ${CMAKE_SYSTEM_PROCESSOR}")
 if (CMAKE_SYSTEM_PROCESSOR MATCHES "ARM64|arm64|aarch64")
     message(STATUS "Using ARM64 flags")
     set(ACCEL_ARCHITECTURES "native;armv8-a;armv8.1-a;armv8.2-a;armv8.3-a;armv8.4-a;armv8.5-a;armv8.6-a;armv8-r")
-elseif (CMAKE_SYSTEM_PROCESSOR MATCHES "X86_64|X64|AMD64")
+elseif (CMAKE_SYSTEM_PROCESSOR MATCHES "x86_64|X86_64|X64|x64|AMD64")
     message(STATUS "Using x86-64 flags")
     set(ACCEL_ARCHITECTURES "native;x86-64;x86-64-v2;x86-64-v3;x86-64-v4;znver1;znver2;znver3;znver4;znver5")
 endif()