diff --git a/src/wasapi/mod.rs b/src/wasapi/mod.rs
index 35d3ecc..7346ee0 100644
--- a/src/wasapi/mod.rs
+++ b/src/wasapi/mod.rs
@@ -41,7 +41,7 @@ impl Voice {
     pub fn get_samples_format(&self) -> ::SampleFormat {
         match self.bits_per_sample {
             16 => ::SampleFormat::I16,
-            _ => unimplemented!(),
+            _ => panic!("{}-bit format not yet supported", self.bits_per_sample),
         }
     }