diff --git a/nih_plug/src/params.rs b/nih_plug/src/params.rs
index d1dc8505..4a2987a7 100644
--- a/nih_plug/src/params.rs
+++ b/nih_plug/src/params.rs
@@ -70,7 +70,6 @@ macro_rules! impl_plainparam {
             ///
             /// TODO: After implementing VST3, check if we handle parsing failures correctly
             pub fn from_string(&mut self, string: &str) -> bool {
-                // TODO: Debug asserts on failures
                 let value = match &self.string_to_value {
                     Some(f) => f(string),
                     // TODO: Check how Rust's parse function handles trailing garbage
diff --git a/plugins/gain/src/lib.rs b/plugins/gain/src/lib.rs
index 92d6dcbc..d933d379 100644
--- a/plugins/gain/src/lib.rs
+++ b/plugins/gain/src/lib.rs
@@ -14,6 +14,9 @@
 // You should have received a copy of the GNU General Public License
 // along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
+#[macro_use]
+extern crate nih_plug;
+
 use nih_plug::{
     params::{FloatParam, Params, Range},
     plugin::{BufferConfig, BusConfig, Plugin},
@@ -87,9 +90,8 @@ impl Plugin for Gain {
         let num_channels = samples.len();
         let num_samples = samples[0].len();
         for channel in &samples[1..] {
+            nih_debug_assert_eq!(channel.len(), num_samples);
             if channel.len() != num_samples {
-                // TODO: Debug assert
-                eprintln!("Mismatched channel lengths, aborting");
                 return;
             }
         }