diff --git a/src/rose/rose_build_role_aliasing.cpp b/src/rose/rose_build_role_aliasing.cpp
index 87b6936c..62db5b2e 100644
--- a/src/rose/rose_build_role_aliasing.cpp
+++ b/src/rose/rose_build_role_aliasing.cpp
@@ -439,12 +439,16 @@ size_t hashRightRoleProperties(RoseVertex v, const RoseGraph &g) {
     hash_combine(val, hash_range(begin(props.reports), end(props.reports)));
 
     if (props.suffix) {
-        hash_combine(val, all_reports(props.suffix));
-        if (props.suffix.graph) {
-            hash_combine(val, num_vertices(*props.suffix.graph));
+        const auto &suffix = props.suffix;
+        if (suffix.castle) {
+            hash_combine(val, suffix.castle->reach());
+            hash_combine(val, suffix.castle->repeats.size());
         }
-        if (props.suffix.haig) {
-            hash_combine(val, hash_dfa(*props.suffix.haig));
+        if (suffix.graph) {
+            hash_combine(val, num_vertices(*suffix.graph));
+        }
+        if (suffix.haig) {
+            hash_combine(val, hash_dfa(*suffix.haig));
         }
     }