diff --git a/tests/regression/09-regions/07-kernel_list_rc.c b/tests/regression/09-regions/07-kernel_list_rc.c
index 783af7f026..89b9a94269 100644
--- a/tests/regression/09-regions/07-kernel_list_rc.c
+++ b/tests/regression/09-regions/07-kernel_list_rc.c
@@ -7,7 +7,8 @@ struct s {
   struct list_head list;
 }; 
 
-struct list_head A, B;
+LIST_HEAD(A);
+LIST_HEAD(B);
 
 static DEFINE_MUTEX(A_mutex);
 static DEFINE_MUTEX(B_mutex);
diff --git a/tests/regression/09-regions/08-kernel_list_nr.c b/tests/regression/09-regions/08-kernel_list_nr.c
index b21dc87f53..fde094bcf6 100644
--- a/tests/regression/09-regions/08-kernel_list_nr.c
+++ b/tests/regression/09-regions/08-kernel_list_nr.c
@@ -8,7 +8,8 @@ struct s {
   struct list_head list;
 };
 
-struct list_head A, B;
+LIST_HEAD(A);
+LIST_HEAD(B);
 
 static DEFINE_MUTEX(A_mutex);
 static DEFINE_MUTEX(B_mutex);
diff --git a/tests/regression/09-regions/14-kernel_foreach_rc.c b/tests/regression/09-regions/14-kernel_foreach_rc.c
index a32588b64d..315d670a6e 100644
--- a/tests/regression/09-regions/14-kernel_foreach_rc.c
+++ b/tests/regression/09-regions/14-kernel_foreach_rc.c
@@ -8,7 +8,7 @@ struct s {
   struct list_head list;
 }; 
 
-struct list_head slot[10];
+struct list_head slot[10]; // TODO: correctly initialize list heads
 struct mutex slots_mutex[10];
 
 struct s *new(int x) {
diff --git a/tests/regression/09-regions/15-kernel_foreach_nr.c b/tests/regression/09-regions/15-kernel_foreach_nr.c
index cc9d36d0ab..d81e83e928 100644
--- a/tests/regression/09-regions/15-kernel_foreach_nr.c
+++ b/tests/regression/09-regions/15-kernel_foreach_nr.c
@@ -9,7 +9,7 @@ struct s {
   struct list_head list;
 };
 
-struct list_head slot[10];
+struct list_head slot[10]; // TODO: correctly initialize list heads
 struct mutex slots_mutex[10];
 
 struct s *new(int x) {