diff --git a/Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/mem/SubMemoryBlock.java b/Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/mem/SubMemoryBlock.java
index 31d7e4a96d..f7cfb6fc05 100644
--- a/Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/mem/SubMemoryBlock.java
+++ b/Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/mem/SubMemoryBlock.java
@@ -216,6 +216,7 @@ abstract class SubMemoryBlock {
 	 * @throws IOException if a database error occurs.
 	 */
 	protected void setParentIdAndStartingOffset(long key, long startingOffset) throws IOException {
+		this.startingOffset = startingOffset;
 		record.setLongValue(MemoryMapDBAdapter.SUB_PARENT_ID_COL, key);
 		record.setLongValue(MemoryMapDBAdapter.SUB_START_OFFSET_COL, startingOffset);
 		adapter.updateSubBlockRecord(record);
diff --git a/Ghidra/Framework/SoftwareModeling/src/test/java/ghidra/program/database/mem/MemBlockDBTest.java b/Ghidra/Framework/SoftwareModeling/src/test/java/ghidra/program/database/mem/MemBlockDBTest.java
index 6ba898fd74..1dcd4592d7 100644
--- a/Ghidra/Framework/SoftwareModeling/src/test/java/ghidra/program/database/mem/MemBlockDBTest.java
+++ b/Ghidra/Framework/SoftwareModeling/src/test/java/ghidra/program/database/mem/MemBlockDBTest.java
@@ -406,6 +406,16 @@ public class MemBlockDBTest extends AbstractGenericTest {
 		assertEquals(10, sourceInfo.getLength());
 	}
 
+	@Test
+	public void testSplitAfterExpand() throws Exception {
+		FileBytes fileBytes = createFileBytes();
+		MemoryBlock block1 = createFileBytesBlock(fileBytes, addr(0), 0, 50);
+		MemoryBlock block2 = mem.createBlock(block1, block1.getName() + ".exp", addr(50), 50);
+		MemoryBlock expandedBlock = mem.join(block1, block2);
+		mem.split(expandedBlock, addr(50));
+		assertEquals(0, mem.getByte(addr(50)));
+	}
+
 	@Test
 	public void testSplitFileBytes() throws Exception {
 		FileBytes fileBytes = createFileBytes();