diff --git a/test/reference/ddr3_init.h b/test/reference/ddr3_init.h
index d7e47c5..f399bed 100644
--- a/test/reference/ddr3_init.h
+++ b/test/reference/ddr3_init.h
@@ -25,6 +25,7 @@
 #define SDRAM_PHY_RDPHASE 0
 #define SDRAM_PHY_WRPHASE 1
 #define SDRAM_PHY_WRITE_LEVELING_CAPABLE
+#define SDRAM_PHY_WRITE_LATENCY_CALIBRATION_CAPABLE
 #define SDRAM_PHY_READ_LEVELING_CAPABLE
 #define SDRAM_PHY_MODULES DFII_PIX_DATA_BYTES/2
 #define SDRAM_PHY_DELAYS 32
diff --git a/test/reference/ddr4_init.h b/test/reference/ddr4_init.h
index 4691ac3..6abf3c9 100644
--- a/test/reference/ddr4_init.h
+++ b/test/reference/ddr4_init.h
@@ -26,6 +26,7 @@
 #define SDRAM_PHY_WRPHASE 2
 #define SDRAM_PHY_WRITE_LEVELING_CAPABLE
 #define SDRAM_PHY_WRITE_LEVELING_REINIT
+#define SDRAM_PHY_WRITE_LATENCY_CALIBRATION_CAPABLE
 #define SDRAM_PHY_READ_LEVELING_CAPABLE
 #define SDRAM_PHY_MODULES DFII_PIX_DATA_BYTES/2
 #define SDRAM_PHY_DELAYS 512