diff --git a/CMakeLists.txt b/CMakeLists.txt
index b01b90fc54..15c4126d64 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -206,7 +206,7 @@ elseif(_ARCH_64 AND CMAKE_SYSTEM_PROCESSOR MATCHES "x86_64|amd64|AMD64")
   add_definitions(-D_M_X86=1)
   add_definitions(-D_M_X86_64=1)
   check_and_add_flag(HAVE_SSE2 -msse2)
-elseif(CMAKE_SYSTEM_PROCESSOR STREQUAL "aarch64")
+elseif(_ARCH_64 AND CMAKE_SYSTEM_PROCESSOR MATCHES "aarch64|arm64")
   set(_M_ARM_64 1)
   add_definitions(-D_M_ARM_64=1)
   # CRC instruction set is used in the CRC32 hash function