diff --git a/param.h b/param.h
index 3cc400b54..48b7ef383 100644
--- a/param.h
+++ b/param.h
@@ -1999,7 +1999,7 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #define ZGEMM_DEFAULT_UNROLL_M 2
 #define ZGEMM_DEFAULT_UNROLL_N 2
 
-#ifdef OS_LINUX
+#if defined(OS_LINUX) || defined(OS_DARWIN)
 #if L2_SIZE == 1024976
 #define SGEMM_DEFAULT_P 320
 #define DGEMM_DEFAULT_P 256