diff --git a/embassy-stm32/Cargo.toml b/embassy-stm32/Cargo.toml
index 10e5e48c..82b1ba3a 100644
--- a/embassy-stm32/Cargo.toml
+++ b/embassy-stm32/Cargo.toml
@@ -17,7 +17,7 @@ flavors = [
     { regex_feature = "stm32f1.*", target = "thumbv7m-none-eabi" },
     { regex_feature = "stm32f2.*", target = "thumbv7m-none-eabi" },
     { regex_feature = "stm32f3.*", target = "thumbv7em-none-eabi" },
-    { regex_feature = "stm32f42.*", target = "thumbv7em-none-eabi" },
+    { regex_feature = "stm32f4.*", target = "thumbv7em-none-eabi" },
     { regex_feature = "stm32f7.*", target = "thumbv7em-none-eabi" },
     { regex_feature = "stm32c0.*", target = "thumbv6m-none-eabi" },
     { regex_feature = "stm32g0.*", target = "thumbv6m-none-eabi" },