diff --git a/src/main/java/software/coley/llzip/part/CentralDirectoryFileHeader.java b/src/main/java/software/coley/llzip/part/CentralDirectoryFileHeader.java
index b0010e5..5dd6dee 100644
--- a/src/main/java/software/coley/llzip/part/CentralDirectoryFileHeader.java
+++ b/src/main/java/software/coley/llzip/part/CentralDirectoryFileHeader.java
@@ -220,7 +220,7 @@ public long getCompressedSize() {
 	 * 		Compressed size of {@link LocalFileHeader#getFileData()}.
 	 */
 	public void setCompressedSize(long compressedSize) {
-		this.compressedSize = compressedSize & 0xffffffffL;
+		this.compressedSize = compressedSize & 0xFFFFFFFFL;
 	}
 
 	/**
@@ -239,7 +239,7 @@ public long getUncompressedSize() {
 	 * 		Uncompressed size after {@link LocalFileHeader#decompress(Decompressor)} is used on {@link LocalFileHeader#getFileData()}.
 	 */
 	public void setUncompressedSize(long uncompressedSize) {
-		this.uncompressedSize = uncompressedSize & 0xffffffffL;
+		this.uncompressedSize = uncompressedSize & 0xFFFFFFFFL;
 	}
 
 	/**
@@ -254,7 +254,7 @@ public int getFileNameLength() {
 	 * 		Length of {@link #getFileName()}.
 	 */
 	public void setFileNameLength(int fileNameLength) {
-		this.fileNameLength = fileNameLength & 0xffff;
+		this.fileNameLength = fileNameLength & 0xFFFF;
 	}
 
 	/**
@@ -269,7 +269,7 @@ public int getExtraFieldLength() {
 	 * 		Length of {@link #getExtraField()}
 	 */
 	public void setExtraFieldLength(int extraFieldLength) {
-		this.extraFieldLength = extraFieldLength & 0xffff;
+		this.extraFieldLength = extraFieldLength & 0xFFFF;
 	}
 
 	/**
@@ -284,7 +284,7 @@ public int getFileCommentLength() {
 	 * 		Length of {@link #getFileComment()}.
 	 */
 	public void setFileCommentLength(int fileCommentLength) {
-		this.fileCommentLength = fileCommentLength & 0xffff;
+		this.fileCommentLength = fileCommentLength & 0xFFFF;
 	}
 
 	/**
@@ -357,7 +357,7 @@ public long getRelativeOffsetOfLocalHeader() {
 	 * 		This should also be where the {@link LocalFileHeader} is located.  Or {@code 0xFFFFFFFF} for ZIP64.
 	 */
 	public void setRelativeOffsetOfLocalHeader(long relativeOffsetOfLocalHeader) {
-		this.relativeOffsetOfLocalHeader = relativeOffsetOfLocalHeader & 0xffffffffL;
+		this.relativeOffsetOfLocalHeader = relativeOffsetOfLocalHeader & 0xFFFFFFFFL;
 	}
 
 	/**
diff --git a/src/main/java/software/coley/llzip/part/EndOfCentralDirectory.java b/src/main/java/software/coley/llzip/part/EndOfCentralDirectory.java
index b6cd247..aae4fb6 100644
--- a/src/main/java/software/coley/llzip/part/EndOfCentralDirectory.java
+++ b/src/main/java/software/coley/llzip/part/EndOfCentralDirectory.java
@@ -125,7 +125,7 @@ public long getCentralDirectorySize() {
 	 * 		Size of central directory in bytes, or {@code 0xFFFFFFFF} for ZIP64.
 	 */
 	public void setCentralDirectorySize(long centralDirectorySize) {
-		this.centralDirectorySize = centralDirectorySize & 0xffffffffL;
+		this.centralDirectorySize = centralDirectorySize & 0xFFFFFFFFL;
 	}
 
 	/**
@@ -142,7 +142,7 @@ public long getCentralDirectoryOffset() {
 	 *        {@link #getCentralDirectoryStartDisk() starting disk number}, or {@code 0xFFFFFFFF} for ZIP64.
 	 */
 	public void setCentralDirectoryOffset(long centralDirectoryOffset) {
-		this.centralDirectoryOffset = centralDirectoryOffset & 0xffffffffL;
+		this.centralDirectoryOffset = centralDirectoryOffset & 0xFFFFFFFFL;
 	}
 
 	/**
@@ -157,7 +157,7 @@ public int getZipCommentLength() {
 	 *        {@link #getZipComment() Comment} length.
 	 */
 	public void setZipCommentLength(int zipCommentLength) {
-		this.zipCommentLength = zipCommentLength & 0xffff;
+		this.zipCommentLength = zipCommentLength & 0xFFFF;
 	}
 
 	/**
diff --git a/src/main/java/software/coley/llzip/part/JvmLocalFileHeader.java b/src/main/java/software/coley/llzip/part/JvmLocalFileHeader.java
index b0c4811..0057111 100644
--- a/src/main/java/software/coley/llzip/part/JvmLocalFileHeader.java
+++ b/src/main/java/software/coley/llzip/part/JvmLocalFileHeader.java
@@ -49,9 +49,9 @@ public void link(CentralDirectoryFileHeader directoryFileHeader) {
 		if (!foundPk) {
 			long fileDataLength;
 			if (getCompressionMethod() == ZipCompressions.STORED) {
-				fileDataLength = directoryFileHeader.getUncompressedSize() & 0xffffffffL;
+				fileDataLength = directoryFileHeader.getUncompressedSize() & 0xFFFFFFFFL;
 			} else {
-				fileDataLength = directoryFileHeader.getCompressedSize() & 0xffffffffL;
+				fileDataLength = directoryFileHeader.getCompressedSize() & 0xFFFFFFFFL;
 			}
 			setFileData(data.sliceOf(offset, fileDataLength));
 			data = null;
diff --git a/src/main/java/software/coley/llzip/part/LocalFileHeader.java b/src/main/java/software/coley/llzip/part/LocalFileHeader.java
index c77d83d..1d8da31 100644
--- a/src/main/java/software/coley/llzip/part/LocalFileHeader.java
+++ b/src/main/java/software/coley/llzip/part/LocalFileHeader.java
@@ -207,7 +207,7 @@ public long getCompressedSize() {
 	 * 		Compressed size of {@link #getFileData()}.
 	 */
 	public void setCompressedSize(long compressedSize) {
-		this.compressedSize = compressedSize & 0xffffffffL;
+		this.compressedSize = compressedSize & 0xFFFFFFFFL;
 	}
 
 	/**
@@ -226,7 +226,7 @@ public long getUncompressedSize() {
 	 * 		Uncompressed size after {@link #decompress(Decompressor)} is used on {@link #getFileData()}.
 	 */
 	public void setUncompressedSize(long uncompressedSize) {
-		this.uncompressedSize = uncompressedSize & 0xffffffffL;
+		this.uncompressedSize = uncompressedSize & 0xFFFFFFFFL;
 	}
 
 	/**
@@ -241,7 +241,7 @@ public int getFileNameLength() {
 	 * 		Length of {@link #getFileName()}.
 	 */
 	public void setFileNameLength(int fileNameLength) {
-		this.fileNameLength = fileNameLength & 0xffff;
+		this.fileNameLength = fileNameLength & 0xFFFF;
 	}
 
 	/**
@@ -256,7 +256,7 @@ public int getExtraFieldLength() {
 	 * 		Length of {@link #getExtraField()}
 	 */
 	public void setExtraFieldLength(int extraFieldLength) {
-		this.extraFieldLength = extraFieldLength & 0xffff;
+		this.extraFieldLength = extraFieldLength & 0xFFFF;
 	}
 
 	/**