diff --git a/src/util/mod.rs b/src/util/mod.rs
index c48f2ce..7211884 100644
--- a/src/util/mod.rs
+++ b/src/util/mod.rs
@@ -57,7 +57,8 @@ pub struct RawMedia {
 // Errors
 
 pub enum GenericError {
-    UnknownSyncByte
+    UnknownSyncByte,
+    FLVUnknownTagType,
 }
 
 impl Error for GenericError {}
@@ -66,6 +67,7 @@ impl fmt::Debug for GenericError {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         match self {
             GenericError::UnknownSyncByte => write!(f, "sync byte does not match any implemented input format"),
+            GenericError::FLVUnknownTagType => write!(f, "FLV tag does not match expected values")
         }
     }
 }