diff --git a/Userland/Libraries/LibWasm/Parser/Parser.cpp b/Userland/Libraries/LibWasm/Parser/Parser.cpp
index 96239c77fa8..28d29a3f905 100644
--- a/Userland/Libraries/LibWasm/Parser/Parser.cpp
+++ b/Userland/Libraries/LibWasm/Parser/Parser.cpp
@@ -1310,8 +1310,6 @@ ByteString parse_error_to_byte_string(ParseError error)
         return "A parsed tag did not make sense in context";
     case ParseError::InvalidType:
         return "A parsed type did not make sense in context";
-    case ParseError::NotImplemented:
-        return "The parser encountered an unimplemented feature";
     case ParseError::HugeAllocationRequested:
         return "Parsing caused an attempt to allocate a very big chunk of memory, likely malformed data";
     case ParseError::OutOfMemory:
diff --git a/Userland/Libraries/LibWasm/Types.h b/Userland/Libraries/LibWasm/Types.h
index 7e8afc45fa5..e3ddf49dac2 100644
--- a/Userland/Libraries/LibWasm/Types.h
+++ b/Userland/Libraries/LibWasm/Types.h
@@ -56,8 +56,6 @@ enum class ParseError {
     OutOfMemory,
     SectionSizeMismatch,
     InvalidUtf8,
-    // FIXME: This should not exist!
-    NotImplemented,
 };
 
 ByteString parse_error_to_byte_string(ParseError);