diff --git a/config/zen/bli_family_zen.h b/config/zen/bli_family_zen.h
index ccf6a2d42..db9fd4e8f 100644
--- a/config/zen/bli_family_zen.h
+++ b/config/zen/bli_family_zen.h
@@ -43,12 +43,12 @@
 #define BLIS_DEFAULT_NR_THREAD_MAX 1
 
 #define BLIS_ENABLE_ZEN_BLOCK_SIZES
-//#define BLIS_ENABLE_SMALL_MATRIX
+#define BLIS_ENABLE_SMALL_MATRIX
 
 // This will select the threshold below which small matrix code will be called.
-//#define BLIS_SMALL_MATRIX_THRES        700
-//#define BLIS_SMALL_M_RECT_MATRIX_THRES 160
-//#define BLIS_SMALL_K_RECT_MATRIX_THRES 128
+#define BLIS_SMALL_MATRIX_THRES        700
+#define BLIS_SMALL_M_RECT_MATRIX_THRES 160
+#define BLIS_SMALL_K_RECT_MATRIX_THRES 128