diff --git a/boards/arm/assimilator-bt/assimilator-bt-pinctrl.dtsi b/boards/arm/assimilator-bt/assimilator-bt-pinctrl.dtsi
index 2d09278..9cbc773 100644
--- a/boards/arm/assimilator-bt/assimilator-bt-pinctrl.dtsi
+++ b/boards/arm/assimilator-bt/assimilator-bt-pinctrl.dtsi
@@ -23,16 +23,16 @@
     spi1_default: spi1_default {
         group1 {
             psels = <NRF_PSEL(SPIM_SCK, 0, 13)>,
-                <NRF_PSEL(SPIM_MOSI, 0, 17)>,
-                <NRF_PSEL(SPIM_MISO, 0, 17)>;
+                <NRF_PSEL(SPIM_MOSI, 0, 15)>,
+                <NRF_PSEL(SPIM_MISO, 0, 15)>;
         };
     };
 
     spi1_sleep: spi1_sleep {
         group1 {
             psels = <NRF_PSEL(SPIM_SCK, 0, 13)>,
-                <NRF_PSEL(SPIM_MOSI, 0, 17)>,
-                <NRF_PSEL(SPIM_MISO, 0, 17)>;
+                <NRF_PSEL(SPIM_MOSI, 0, 15)>,
+                <NRF_PSEL(SPIM_MISO, 0, 15)>;
             low-power-enable;
         };
     };