diff --git a/Sources/MultipartKit/MultipartMessageError.swift b/Sources/MultipartKit/MultipartMessageError.swift
deleted file mode 100644
index 7b6cae2..0000000
--- a/Sources/MultipartKit/MultipartMessageError.swift
+++ /dev/null
@@ -1,4 +0,0 @@
-/// Higher level semantic/structural errors.
-package enum MultipartMessageError: Error, Equatable {
-    case unexpectedEndOfFile
-}
diff --git a/Sources/MultipartKit/MultipartParser+parse.swift b/Sources/MultipartKit/MultipartParser+parse.swift
index a8ad435..8448dad 100644
--- a/Sources/MultipartKit/MultipartParser+parse.swift
+++ b/Sources/MultipartKit/MultipartParser+parse.swift
@@ -36,7 +36,7 @@ extension MultipartParser {
             case .needMoreData:
                 // In synchronous parsing with all data provided upfront,
                 // needing more data indicates an incomplete/corrupted message
-                throw MultipartMessageError.unexpectedEndOfFile
+                throw MultipartParserError.unexpectedEndOfFile
 
             case .error(let error):
                 throw error
diff --git a/Sources/MultipartKit/StreamingMultipartParserAsyncSequence+Isolation.swift b/Sources/MultipartKit/StreamingMultipartParserAsyncSequence+Isolation.swift
index 228cbaf..efe3a42 100644
--- a/Sources/MultipartKit/StreamingMultipartParserAsyncSequence+Isolation.swift
+++ b/Sources/MultipartKit/StreamingMultipartParserAsyncSequence+Isolation.swift
@@ -37,7 +37,7 @@ extension StreamingMultipartParserAsyncSequence.AsyncIterator {
                 do {
                     next = try await iterator.next(isolation: actor)
                 } catch {
-                    throw MultipartParserError.backingSequenceError(underlyingReason: "\(error)")
+                    throw MultipartParserError.backingSequenceError(reason: "\(error)")
                 }
                 if let next {
                     parser.append(buffer: next)
diff --git a/Sources/MultipartKit/StreamingMultipartParserAsyncSequence.swift b/Sources/MultipartKit/StreamingMultipartParserAsyncSequence.swift
index 4bbc95d..917050a 100644
--- a/Sources/MultipartKit/StreamingMultipartParserAsyncSequence.swift
+++ b/Sources/MultipartKit/StreamingMultipartParserAsyncSequence.swift
@@ -81,7 +81,7 @@ where BackingSequence.Element: MultipartPartBodyElement & RangeReplaceableCollec
                     do {
                         next = try await iterator.next()
                     } catch {
-                        throw MultipartParserError.backingSequenceError(underlyingReason: "\(error)")
+                        throw MultipartParserError.backingSequenceError(reason: "\(error)")
                     }
                     if let next {
                         parser.append(buffer: next)
diff --git a/Tests/MultipartKitTests/ParserTests.swift b/Tests/MultipartKitTests/ParserTests.swift
index d3a634b..0b35519 100644
--- a/Tests/MultipartKitTests/ParserTests.swift
+++ b/Tests/MultipartKitTests/ParserTests.swift
@@ -141,7 +141,7 @@ struct ParserTests {
             """.utf8
         )
 
-        #expect(throws: MultipartMessageError.unexpectedEndOfFile) {
+        #expect(throws: MultipartParserError.unexpectedEndOfFile) {
             _ = try MultipartParser<[UInt8]>(boundary: boundary)
                 .parse([UInt8](message))
         }
@@ -149,7 +149,7 @@ struct ParserTests {
         let stream = makeParsingStream(for: message)
         var iterator = StreamingMultipartParserAsyncSequence(boundary: boundary, buffer: stream).makeAsyncIterator()
 
-        await #expect(throws: MultipartMessageError.unexpectedEndOfFile) {
+        await #expect(throws: MultipartParserError.unexpectedEndOfFile) {
             while (try await iterator.next()) != nil {}
         }
     }
@@ -216,7 +216,7 @@ struct ParserTests {
             """.utf8
         )
 
-        #expect(throws: MultipartMessageError.unexpectedEndOfFile) {
+        #expect(throws: MultipartParserError.unexpectedEndOfFile) {
             _ = try MultipartParser<[UInt8]>(boundary: boundary)
                 .parse([UInt8](message))
         }
@@ -224,7 +224,7 @@ struct ParserTests {
         let stream = makeParsingStream(for: message)
         var iterator = StreamingMultipartParserAsyncSequence(boundary: boundary, buffer: stream).makeAsyncIterator()
 
-        await #expect(throws: MultipartMessageError.unexpectedEndOfFile) {
+        await #expect(throws: MultipartParserError.unexpectedEndOfFile) {
             while (try await iterator.next()) != nil {}
         }
     }