diff --git a/debugtools/DDR_VM/src/com/ibm/j9ddr/AuxFieldInfo29.dat b/debugtools/DDR_VM/src/com/ibm/j9ddr/AuxFieldInfo29.dat
index 7971e81e4e7..ce2b585dbcb 100644
--- a/debugtools/DDR_VM/src/com/ibm/j9ddr/AuxFieldInfo29.dat
+++ b/debugtools/DDR_VM/src/com/ibm/j9ddr/AuxFieldInfo29.dat
@@ -264,7 +264,7 @@ J9JavaVM.hiddenLockwordFieldShape = required
 J9JavaVM.identityHashData = required
 J9JavaVM.impdep1PC = U8*
 J9JavaVM.initialMethods = required
-J9JavaVM.isIndexableDataAddrPresent = U_32
+J9JavaVM.isIndexableDataAddrPresent = UDATA
 J9JavaVM.intReflectClass = required
 J9JavaVM.j2seVersion = required
 J9JavaVM.j9ras = required
diff --git a/runtime/oti/j9nonbuilder.h b/runtime/oti/j9nonbuilder.h
index c93b722760b..f82e8c2d0a7 100644
--- a/runtime/oti/j9nonbuilder.h
+++ b/runtime/oti/j9nonbuilder.h
@@ -5540,7 +5540,7 @@ typedef struct J9VMThread {
 	UDATA contiguousIndexableHeaderSize;
 	UDATA discontiguousIndexableHeaderSize;
 #if defined(J9VM_ENV_DATA64)
-	U_32 isIndexableDataAddrPresent;
+	UDATA isIndexableDataAddrPresent;
 	U_32 isVirtualLargeObjectHeapEnabled;
 #endif /* defined(J9VM_ENV_DATA64) */
 	void* gpInfo;
@@ -6105,7 +6105,7 @@ typedef struct J9JavaVM {
 	UDATA contiguousIndexableHeaderSize;
 	UDATA discontiguousIndexableHeaderSize;
 #if defined(J9VM_ENV_DATA64)
-	U_32 isIndexableDataAddrPresent;
+	UDATA isIndexableDataAddrPresent;
 	U_32 isVirtualLargeObjectHeapEnabled;
 	U_32 isIndexableDualHeaderShapeEnabled;
 #endif /* defined(J9VM_ENV_DATA64) */