diff --git a/tests/drivers/uart/uart_async_api/boards/nrf52840dk_nrf52840.overlay b/tests/drivers/uart/uart_async_api/boards/nrf52840dk_nrf52840.overlay
index ddcd6ce0776..86f2ea169cd 100644
--- a/tests/drivers/uart/uart_async_api/boards/nrf52840dk_nrf52840.overlay
+++ b/tests/drivers/uart/uart_async_api/boards/nrf52840dk_nrf52840.overlay
@@ -20,8 +20,8 @@
 		group1 {
 			psels = <NRF_PSEL(UART_TX, 1, 1)>,
 				<NRF_PSEL(UART_RX, 1, 2)>,
-				<NRF_PSEL(UART_RTS, 0, 5)>,
-				<NRF_PSEL(UART_CTS, 0, 7)>;
+				<NRF_PSEL(UART_RTS, 1, 3)>,
+				<NRF_PSEL(UART_CTS, 1, 4)>;
 		};
 	};
 
@@ -29,8 +29,8 @@
 		group1 {
 			psels = <NRF_PSEL(UART_TX, 1, 1)>,
 				<NRF_PSEL(UART_RX, 1, 2)>,
-				<NRF_PSEL(UART_RTS, 0, 5)>,
-				<NRF_PSEL(UART_CTS, 0, 7)>;
+				<NRF_PSEL(UART_RTS, 1, 3)>,
+				<NRF_PSEL(UART_CTS, 1, 4)>;
 			low-power-enable;
 		};
 	};
diff --git a/tests/drivers/uart/uart_mix_fifo_poll/boards/nrf52840dk_nrf52840.overlay b/tests/drivers/uart/uart_mix_fifo_poll/boards/nrf52840dk_nrf52840.overlay
index e1452f6afbd..773953fefa2 100644
--- a/tests/drivers/uart/uart_mix_fifo_poll/boards/nrf52840dk_nrf52840.overlay
+++ b/tests/drivers/uart/uart_mix_fifo_poll/boards/nrf52840dk_nrf52840.overlay
@@ -18,19 +18,19 @@
 
 	uart0_default_alt: uart0_default_alt {
 		group1 {
-			psels = <NRF_PSEL(UART_TX, 1, 12)>,
-				<NRF_PSEL(UART_RX, 1, 13)>,
-				<NRF_PSEL(UART_RTS, 1, 14)>,
-				<NRF_PSEL(UART_CTS, 1, 15)>;
+			psels = <NRF_PSEL(UART_TX, 1, 1)>,
+				<NRF_PSEL(UART_RX, 1, 2)>,
+				<NRF_PSEL(UART_RTS, 1, 3)>,
+				<NRF_PSEL(UART_CTS, 1, 4)>;
 		};
 	};
 
 	uart0_sleep_alt: uart0_sleep_alt {
 		group1 {
-			psels = <NRF_PSEL(UART_TX, 1, 12)>,
-				<NRF_PSEL(UART_RX, 1, 13)>,
-				<NRF_PSEL(UART_RTS, 1, 14)>,
-				<NRF_PSEL(UART_CTS, 1, 15)>;
+			psels = <NRF_PSEL(UART_TX, 1, 1)>,
+				<NRF_PSEL(UART_RX, 1, 2)>,
+				<NRF_PSEL(UART_RTS, 1, 3)>,
+				<NRF_PSEL(UART_CTS, 1, 4)>;
 			low-power-enable;
 		};
 	};