diff --git a/spec/build/bsps/arm/stm32h7/optusart3gpiopins.yml b/spec/build/bsps/arm/stm32h7/optusart3gpiopins.yml
index 59c939679a..dd236421c8 100644
--- a/spec/build/bsps/arm/stm32h7/optusart3gpiopins.yml
+++ b/spec/build/bsps/arm/stm32h7/optusart3gpiopins.yml
@@ -7,7 +7,6 @@ default-by-variant:
 - value: ( GPIO_PIN_9 | GPIO_PIN_10 )
   variants:
   - arm/nucleo-h743zi
-default-by-variant: []
 enabled-by: true
 format: '{}'
 links: []
diff --git a/spec/build/bsps/arm/stm32h7/optusart3gpioregs.yml b/spec/build/bsps/arm/stm32h7/optusart3gpioregs.yml
index bf5c6b933a..fa3e05b3ba 100644
--- a/spec/build/bsps/arm/stm32h7/optusart3gpioregs.yml
+++ b/spec/build/bsps/arm/stm32h7/optusart3gpioregs.yml
@@ -7,7 +7,6 @@ default-by-variant:
 - value: GPIOB
   variants:
   - arm/nucleo-h743zi
-default-by-variant: []
 enabled-by: true
 format: '{}'
 links: []