diff --git a/param.h b/param.h
index 70c5945ae..3baae31cf 100644
--- a/param.h
+++ b/param.h
@@ -1690,18 +1690,13 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #else
 
-#define SGEMM_DEFAULT_P 768
+#define SGEMM_DEFAULT_P 640
 #define DGEMM_DEFAULT_P 384
 #define CGEMM_DEFAULT_P 384
 #define ZGEMM_DEFAULT_P 256
 
-#ifdef WINDOWS_ABI
-#define SGEMM_DEFAULT_Q 192
+#define SGEMM_DEFAULT_Q 320
 #define DGEMM_DEFAULT_Q 168
-#else
-#define SGEMM_DEFAULT_Q 192
-#define DGEMM_DEFAULT_Q 168
-#endif
 #define CGEMM_DEFAULT_Q 192
 #define ZGEMM_DEFAULT_Q 128