diff --git a/SWCompression.xcodeproj/project.pbxproj b/SWCompression.xcodeproj/project.pbxproj
index 66362314..874d7e07 100644
--- a/SWCompression.xcodeproj/project.pbxproj
+++ b/SWCompression.xcodeproj/project.pbxproj
@@ -42,6 +42,8 @@
 		065569791DC65C2B00A47E66 /* HuffmanTable.swift in Sources */ = {isa = PBXBuildFile; fileRef = 06E961C91DBD5FA1008C47F2 /* HuffmanTable.swift */; };
 		0655697A1DC65C2B00A47E66 /* HuffmanLength.swift in Sources */ = {isa = PBXBuildFile; fileRef = 06AC9B0C1DC1027900A5066B /* HuffmanLength.swift */; };
 		0655697B1DC65C2B00A47E66 /* Extensions.swift in Sources */ = {isa = PBXBuildFile; fileRef = 061FCE301DBCC8BF0052F7BE /* Extensions.swift */; };
+		0655697D1DC6963F00A47E66 /* secondtest.zlib in Resources */ = {isa = PBXBuildFile; fileRef = 0655697C1DC6963F00A47E66 /* secondtest.zlib */; };
+		0655697F1DC6966300A47E66 /* secondtest.zlib.answer in Resources */ = {isa = PBXBuildFile; fileRef = 0655697E1DC6966300A47E66 /* secondtest.zlib.answer */; };
 		06AC9B0D1DC1027900A5066B /* HuffmanLength.swift in Sources */ = {isa = PBXBuildFile; fileRef = 06AC9B0C1DC1027900A5066B /* HuffmanLength.swift */; };
 		06BE1AD21DB410F100EE0F59 /* SWCompression.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 06BE1AC81DB410F100EE0F59 /* SWCompression.framework */; };
 		06BE1AD71DB410F100EE0F59 /* SWCompressionTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 06BE1AD61DB410F100EE0F59 /* SWCompressionTests.swift */; };
@@ -79,6 +81,8 @@
 		065569611DC65B1B00A47E66 /* Info-iOS.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = "Info-iOS.plist"; sourceTree = "<group>"; };
 		065569621DC65B1B00A47E66 /* Info-tvOS.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = "Info-tvOS.plist"; sourceTree = "<group>"; };
 		065569631DC65B1B00A47E66 /* Info-watchOS.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = "Info-watchOS.plist"; sourceTree = "<group>"; };
+		0655697C1DC6963F00A47E66 /* secondtest.zlib */ = {isa = PBXFileReference; lastKnownFileType = file; path = secondtest.zlib; sourceTree = "<group>"; };
+		0655697E1DC6966300A47E66 /* secondtest.zlib.answer */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text; path = secondtest.zlib.answer; sourceTree = "<group>"; };
 		06AC9B0C1DC1027900A5066B /* HuffmanLength.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = HuffmanLength.swift; sourceTree = "<group>"; };
 		06BE1AC81DB410F100EE0F59 /* SWCompression.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; includeInIndex = 0; path = SWCompression.framework; sourceTree = BUILT_PRODUCTS_DIR; };
 		06BE1ACB1DB410F100EE0F59 /* SWCompression.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = SWCompression.h; sourceTree = "<group>"; };
@@ -141,6 +145,8 @@
 				0644925B1DC6121800F10981 /* helloworld.txt.zlib */,
 				06E63DB21DC3B8BD00D3A7C8 /* secondtest.txt */,
 				06E63DB31DC3B8BD00D3A7C8 /* secondtest.txt.gz */,
+				0655697C1DC6963F00A47E66 /* secondtest.zlib */,
+				0655697E1DC6966300A47E66 /* secondtest.zlib.answer */,
 			);
 			path = "Test Files";
 			sourceTree = "<group>";
@@ -418,7 +424,9 @@
 			files = (
 				063364DF1DC51D33007E313F /* empty.txt.gz in Resources */,
 				061FCE2B1DBCC6070052F7BE /* helloworld.txt.gz in Resources */,
+				0655697D1DC6963F00A47E66 /* secondtest.zlib in Resources */,
 				06E63DB41DC3B8BD00D3A7C8 /* secondtest.txt in Resources */,
+				0655697F1DC6966300A47E66 /* secondtest.zlib.answer in Resources */,
 				0644925D1DC6121800F10981 /* helloworld.txt.zlib in Resources */,
 				06E63DB51DC3B8BD00D3A7C8 /* secondtest.txt.gz in Resources */,
 				061FCE2A1DBCC6070052F7BE /* helloworld.txt in Resources */,
@@ -831,6 +839,7 @@
 				065569451DC659FF00A47E66 /* Release */,
 			);
 			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
 		};
 		065569511DC65A8000A47E66 /* Build configuration list for PBXNativeTarget "SWCompression watchOS" */ = {
 			isa = XCConfigurationList;
@@ -839,6 +848,7 @@
 				065569531DC65A8000A47E66 /* Release */,
 			);
 			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
 		};
 		0655695E1DC65A9500A47E66 /* Build configuration list for PBXNativeTarget "SWCompression tvOS" */ = {
 			isa = XCConfigurationList;
@@ -847,6 +857,7 @@
 				065569601DC65A9500A47E66 /* Release */,
 			);
 			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
 		};
 		06BE1AC21DB410F100EE0F59 /* Build configuration list for PBXProject "SWCompression" */ = {
 			isa = XCConfigurationList;
diff --git a/Tests/Constants.swift b/Tests/Constants.swift
index b84aaf5d..bdc0eeb1 100644
--- a/Tests/Constants.swift
+++ b/Tests/Constants.swift
@@ -26,4 +26,9 @@ struct Constants {
     static let helloWorldZlibPath = testBundle.url(forResource: "helloworld.txt",
                                                       withExtension: "zlib")!
 
+    static let secondZlibTestPath = testBundle.url(forResource: "secondtest",
+                                                   withExtension: "zlib")!
+    static let secondZlibTestAnswerPath = testBundle.url(forResource: "secondtest.zlib",
+                                                   withExtension: "answer")!
+
 }
diff --git a/Tests/SWCompressionTests.swift b/Tests/SWCompressionTests.swift
index 926ced63..16961547 100644
--- a/Tests/SWCompressionTests.swift
+++ b/Tests/SWCompressionTests.swift
@@ -58,4 +58,18 @@ class SWCompressionTests: XCTestCase {
         XCTAssertEqual(decompressedString!, "Hello, World!\n", "Decompression was incorrect")
     }
 
+    func testSecondZlibFile() {
+        let testData = try? Data(contentsOf: Constants.secondZlibTestPath)
+        XCTAssertNotNil(testData, "Failed to load test archive")
+        let decompressedData = try? ZlibArchive.unarchive(archiveData: testData!)
+        XCTAssertNotNil(decompressedData, "Failed to decompress")
+        guard decompressedData != nil else { return }
+        let decompressedString = String(data: decompressedData!, encoding: .utf8)
+        XCTAssertNotNil(decompressedString, "Failed to convert decompressed data to string")
+        let answerString = try? String(contentsOf: Constants.secondZlibTestAnswerPath, encoding: .utf8)
+        XCTAssertNotNil(answerString, "Failed to get the answer")
+        guard answerString != nil else { return }
+        XCTAssertEqual(decompressedString!, answerString!, "Decompression was incorrect")
+    }
+
 }
diff --git a/Tests/Test Files/secondtest.zlib b/Tests/Test Files/secondtest.zlib
new file mode 100644
index 00000000..480593bf
Binary files /dev/null and b/Tests/Test Files/secondtest.zlib differ