diff --git a/cmake/SfizzConfig.cmake b/cmake/SfizzConfig.cmake
index bbf9f43e..77415fdf 100644
--- a/cmake/SfizzConfig.cmake
+++ b/cmake/SfizzConfig.cmake
@@ -32,7 +32,7 @@ if (CMAKE_CXX_COMPILER_ID MATCHES "GNU|Clang")
     add_compile_options(-Wextra)
     add_compile_options(-ffast-math)
     add_compile_options(-fno-omit-frame-pointer) # For debugging purposes
-    if (SFIZZ_SYSTEM_PROCESSOR MATCHES "^i.86$")
+    if (SFIZZ_SYSTEM_PROCESSOR MATCHES "^(i.86|x86_64)$")
         add_compile_options(-msse2)
     endif()
 elseif (CMAKE_CXX_COMPILER_ID MATCHES "MSVC")