diff --git a/configs/zynq_zybo_z7_defconfig b/configs/zynq_zybo_z7_defconfig
index 12e1367e97..1dee757062 100644
--- a/configs/zynq_zybo_z7_defconfig
+++ b/configs/zynq_zybo_z7_defconfig
@@ -6,7 +6,7 @@ CONFIG_DM_GPIO=y
 CONFIG_SPL_STACK_R_ADDR=0x200000
 CONFIG_SPL=y
 CONFIG_DEBUG_UART_BASE=0xe0001000
-CONFIG_DEBUG_UART_CLOCK=50000000
+CONFIG_DEBUG_UART_CLOCK=100000000
 CONFIG_DEBUG_UART=y
 CONFIG_DISTRO_DEFAULTS=y
 CONFIG_SYS_CUSTOM_LDSCRIPT=y