diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index 9b3d3b29..19499632 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -52,6 +52,9 @@ jobs:
           - package: embassy-stm32f4
             target: thumbv7em-none-eabi
             features: stm32f405
+          - package: embassy-stm32f4
+            target: thumbv7em-none-eabi
+            features: stm32f446
           - package: embassy-stm32f4
             target: thumbv7em-none-eabi
             features: stm32f405,defmt
diff --git a/embassy-stm32/src/interrupt.rs b/embassy-stm32/src/interrupt.rs
index 5ad7ef8e..262bc3d9 100644
--- a/embassy-stm32/src/interrupt.rs
+++ b/embassy-stm32/src/interrupt.rs
@@ -889,7 +889,7 @@ mod irqs {
     declare!(TIM8_CC);
     declare!(DMA1_STREAM7);
     declare!(FMC);
-    declare!(SDIO);
+    //    declare!(SDIO);
     declare!(TIM5);
     declare!(SPI3);
     declare!(UART4);
diff --git a/embassy-stm32f4/src/serial.rs b/embassy-stm32f4/src/serial.rs
index 87d0caaa..381e0f5e 100644
--- a/embassy-stm32f4/src/serial.rs
+++ b/embassy-stm32f4/src/serial.rs
@@ -278,6 +278,6 @@ usart! {
 
     UART4 => (UART4),
     UART5 => (UART5),
-    UART7 => (UART7),
-    UART8 => (UART8),
+//    UART7 => (UART7),
+//    UART8 => (UART8),
 }