diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 64c0ba0..667572a 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -149,7 +149,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: hecrj/setup-rust-action@v1
       - run: rustup target add ${{ matrix.target }}
-      - run: cargo build --verbose --target=${{ matrix.target }} --no-default-features --features ${{ matrix.frontend_feature }} --features ${{ matrix.backend_feature }}
+      - run: cargo build --verbose --target=${{ matrix.target }} --no-default-features --features ${{ matrix.frontend_feature }},${{ matrix.backend_feature }}
 
   benches:
     name: cargo bench compilation
diff --git a/src/errors.rs b/src/errors.rs
index 66aba7c..1780c0e 100644
--- a/src/errors.rs
+++ b/src/errors.rs
@@ -87,7 +87,7 @@ impl<T: Debug> Debug for InternalError<T> {
 impl<T: Error> Error for InternalError<T> {}
 
 impl InternalError {
-    /// Convert `InternalError<Infallible>` into `InternalError<T>
+    /// Convert `InternalError<Infallible>` into `InternalError<T>`
     pub fn into_custom<T>(self) -> InternalError<T> {
         match self {
             Self::Custom(_) => unreachable!(),
@@ -184,7 +184,7 @@ impl<T> From<::core::convert::Infallible> for ProtocolError<T> {
 }
 
 impl ProtocolError {
-    /// Convert `ProtocolError<Infallible>` into `ProtocolError<T>
+    /// Convert `ProtocolError<Infallible>` into `ProtocolError<T>`
     pub fn into_custom<T>(self) -> ProtocolError<T> {
         match self {
             Self::LibraryError(internal_error) => {