diff --git a/shared/java/javacommon.gradle b/shared/java/javacommon.gradle
index 48a506293b0..567b3027aa6 100644
--- a/shared/java/javacommon.gradle
+++ b/shared/java/javacommon.gradle
@@ -114,6 +114,11 @@ tasks.withType(JavaCompile).configureEach {
         // ignore missing serialVersionUID warnings
         "-Xlint:-serial",
     ]
+
+    // ignore this escape warnings
+    if (JavaVersion.current().isJava12Compatible()) {
+      options.compilerArgs.add("-Xlint:-this-escape");
+    }
 }
 
 dependencies {
diff --git a/wpiutil/src/main/java/edu/wpi/first/util/struct/DynamicStruct.java b/wpiutil/src/main/java/edu/wpi/first/util/struct/DynamicStruct.java
index 165f7db1cd6..1f9fdc379a8 100644
--- a/wpiutil/src/main/java/edu/wpi/first/util/struct/DynamicStruct.java
+++ b/wpiutil/src/main/java/edu/wpi/first/util/struct/DynamicStruct.java
@@ -593,24 +593,24 @@ private void setFieldImpl(StructFieldDescriptor field, long value, int arrIndex)
       case 1:
         {
           byte val = m_data.get(field.m_offset + arrIndex);
-          val &= ~(field.getBitMask() << field.m_bitShift);
-          val |= (value & field.getBitMask()) << field.m_bitShift;
+          val &= (byte) ~(field.getBitMask() << field.m_bitShift);
+          val |= (byte) ((value & field.getBitMask()) << field.m_bitShift);
           m_data.put(field.m_offset + arrIndex, val);
           break;
         }
       case 2:
         {
           short val = m_data.getShort(field.m_offset + arrIndex * 2);
-          val &= ~(field.getBitMask() << field.m_bitShift);
-          val |= (value & field.getBitMask()) << field.m_bitShift;
+          val &= (short) ~(field.getBitMask() << field.m_bitShift);
+          val |= (short) ((value & field.getBitMask()) << field.m_bitShift);
           m_data.putShort(field.m_offset + arrIndex * 2, val);
           break;
         }
       case 4:
         {
           int val = m_data.getInt(field.m_offset + arrIndex * 4);
-          val &= ~(field.getBitMask() << field.m_bitShift);
-          val |= (value & field.getBitMask()) << field.m_bitShift;
+          val &= (int) ~(field.getBitMask() << field.m_bitShift);
+          val |= (int) ((value & field.getBitMask()) << field.m_bitShift);
           m_data.putInt(field.m_offset + arrIndex * 4, val);
           break;
         }