diff --git a/qemu/memory.c b/qemu/memory.c
index 74ea2cf8..8c5fd883 100755
--- a/qemu/memory.c
+++ b/qemu/memory.c
@@ -47,11 +47,12 @@ MemoryRegion *memory_map(struct uc_struct *uc, ram_addr_t begin, size_t size, ui
 
 int memory_free(struct uc_struct *uc)
 {
+    int i;
     get_system_memory(uc)->enabled = false;
-    if (uc->ram) {
-        uc->ram->enabled = false;
-        memory_region_del_subregion(get_system_memory(uc), uc->ram);
-        g_free(uc->ram);
+    for (i = 0; i < uc->mapped_block_count; i++) {
+        uc->mapped_blocks[i].region->enabled = false;
+        memory_region_del_subregion(get_system_memory(uc), uc->mapped_blocks[i].region);
+        g_free(uc->mapped_blocks[i].region);
     }
     return 0;
 }
diff --git a/regress/Makefile b/regress/Makefile
index 06c5a31a..fccfa32c 100644
--- a/regress/Makefile
+++ b/regress/Makefile
@@ -1,7 +1,7 @@
 CFLAGS += -I../include
 LDFLAGS = -L.. -lunicorn
 
-TESTS = map_crash sigill sigill2 block_test
+TESTS = map_crash sigill sigill2 block_test ro_mem_test
 
 all: $(TESTS)