diff --git a/lib/src/analysis/analyzer.rs b/lib/src/analysis/analyzer.rs
index 7291996..e7486d4 100644
--- a/lib/src/analysis/analyzer.rs
+++ b/lib/src/analysis/analyzer.rs
@@ -47,7 +47,5 @@ pub trait Analyzer {
     /// heuristic deems it relevant. Again, be mindful of any state your
     /// [Analyzer] updates per message, since it may be run over hundreds or
     /// thousands of them alongside many other [Analyzers](Analyzer).
-    fn analyze_information_element(&mut self, ie: &InformationElement) -> Option<Event> {
-        None
-    }
+    fn analyze_information_element(&mut self, ie: &InformationElement) -> Option<Event>;
 }
diff --git a/lib/src/analysis/information_element.rs b/lib/src/analysis/information_element.rs
index d9a0494..653b221 100644
--- a/lib/src/analysis/information_element.rs
+++ b/lib/src/analysis/information_element.rs
@@ -74,7 +74,7 @@ impl TryFrom<&GsmtapMessage> for LteInformationElement {
                 L::BcchDlSchMbms => Ok(R::BcchDlSchMbms(decode(&gsmtap_msg.payload)?)),
                 L::SbcchSlBch => Ok(R::SbcchSlBch(decode(&gsmtap_msg.payload)?)),
                 L::SbcchSlBchV2x => Ok(R::SbcchSlBchV2x(decode(&gsmtap_msg.payload)?)),
-                subtype => Err(InformationElementError::UnsupportedGsmtapType(gsmtap_msg.header.gsmtap_type)),
+                _ => Err(InformationElementError::UnsupportedGsmtapType(gsmtap_msg.header.gsmtap_type)),
             };
         }
         Err(InformationElementError::UnsupportedGsmtapType(gsmtap_msg.header.gsmtap_type))