diff --git a/meson.build b/meson.build
index 8a5da63f..263e5fe4 100644
--- a/meson.build
+++ b/meson.build
@@ -38,6 +38,10 @@ compiler_options = [
   # Disable the use of concepts in Boost.Asio until Boost 1.73 gets released
   # https://github.com/boostorg/asio/issues/312
   '-DBOOST_ASIO_DISABLE_CONCEPTS',
+  # When the `force_ftz` option is enabled, we use an intrinsic to force
+  # flush-to-zero. SSE2 is always enabled in x86_64 CPUs, but when we're
+  # compiling the 32-bit bitbridge we need to manually add this flag.
+  '-msse2',
 ]
 # NOTE: GCC doesn't 8-byte align doubles in structs on x86 for ABI-compatibilty
 #       reasons, but MSVC++ does. We need to force this same alignment to be