diff --git a/driver/level3/level3.c b/driver/level3/level3.c
index 70a6500b6..1ede8a247 100644
--- a/driver/level3/level3.c
+++ b/driver/level3/level3.c
@@ -335,7 +335,9 @@ int CNAME(blas_arg_t *args, BLASLONG *range_m, BLASLONG *range_n,
 
         if (min_jj >= 3*GEMM_UNROLL_N) min_jj = 3*GEMM_UNROLL_N;
         else
-          if (min_jj > GEMM_UNROLL_N) min_jj = GEMM_UNROLL_N;
+        	if (min_jj >= 2*GEMM_UNROLL_N) min_jj = 2*GEMM_UNROLL_N;
+        	else
+          		if (min_jj > GEMM_UNROLL_N) min_jj = GEMM_UNROLL_N;
 
 
 
diff --git a/driver/level3/level3_thread.c b/driver/level3/level3_thread.c
index 096342a32..038274300 100644
--- a/driver/level3/level3_thread.c
+++ b/driver/level3/level3_thread.c
@@ -367,7 +367,9 @@ static int inner_thread(blas_arg_t *args, BLASLONG *range_m, BLASLONG *range_n,
 
 	if (min_jj >= 3*GEMM_UNROLL_N) min_jj = 3*GEMM_UNROLL_N;
 	else
-		if (min_jj > GEMM_UNROLL_N) min_jj = GEMM_UNROLL_N;
+		if (min_jj >= 2*GEMM_UNROLL_N) min_jj = 2*GEMM_UNROLL_N;
+		else
+			if (min_jj > GEMM_UNROLL_N) min_jj = GEMM_UNROLL_N;
 
 
 	START_RPCC();
diff --git a/param.h b/param.h
index bed2e452b..962f80ef3 100644
--- a/param.h
+++ b/param.h
@@ -262,6 +262,8 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #define CGEMM3M_DEFAULT_UNROLL_M 8
 #define ZGEMM3M_DEFAULT_UNROLL_N 4
 #define ZGEMM3M_DEFAULT_UNROLL_M 4
+
+#define DGEMM_DEFAULT_UNROLL_MN 16
 #define GEMV_UNROLL 8
 #endif
 
@@ -273,6 +275,7 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #define SGEMM_DEFAULT_P 448
 #define DGEMM_DEFAULT_P 224
 #endif
+
 #define QGEMM_DEFAULT_P 112
 #define CGEMM_DEFAULT_P 224
 #define ZGEMM_DEFAULT_P 112
@@ -285,6 +288,7 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #define SGEMM_DEFAULT_Q 224
 #define DGEMM_DEFAULT_Q 224
 #endif
+
 #define QGEMM_DEFAULT_Q 224
 #define CGEMM_DEFAULT_Q 224
 #define ZGEMM_DEFAULT_Q 224
@@ -1420,7 +1424,8 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #define ZGEMM_DEFAULT_UNROLL_N 2
 #define XGEMM_DEFAULT_UNROLL_N 1
 
-#define DGEMM_DEFAULT_UNROLL_MN 16
+#define SGEMM_DEFAULT_UNROLL_MN 32
+#define DGEMM_DEFAULT_UNROLL_MN 32
 #endif
 
 #ifdef ARCH_X86