diff --git a/lib/zig.h b/lib/zig.h
index 39f9bcc655b1ca2c3d1b8e46413d8c85379bc6e3..91ff613a7272f4a47b93443074e3b3cd5f19e7cf 100644
--- a/lib/zig.h
+++ b/lib/zig.h
@@ -2877,7 +2877,7 @@ typedef zig_repr_f16 zig_f16;
 #undef zig_init_special_f16
 #define zig_init_special_f16(sign, name, arg, repr) repr
 #endif
-#if __APPLE__
+#if __APPLE__ && (defined(__i386__) || defined(__x86_64__))
 typedef zig_repr_f16 zig_compiler_rt_f16;
 #else
 typedef zig_f16 zig_compiler_rt_f16;
diff --git a/stage1/zig.h b/stage1/zig.h
index 39f9bcc655b1ca2c3d1b8e46413d8c85379bc6e3..91ff613a7272f4a47b93443074e3b3cd5f19e7cf 100644
--- a/stage1/zig.h
+++ b/stage1/zig.h
@@ -2877,7 +2877,7 @@ typedef zig_repr_f16 zig_f16;
 #undef zig_init_special_f16
 #define zig_init_special_f16(sign, name, arg, repr) repr
 #endif
-#if __APPLE__
+#if __APPLE__ && (defined(__i386__) || defined(__x86_64__))
 typedef zig_repr_f16 zig_compiler_rt_f16;
 #else
 typedef zig_f16 zig_compiler_rt_f16;