diff --git a/gef.py b/gef.py
index 158d6f111..82d43d049 100644
--- a/gef.py
+++ b/gef.py
@@ -1208,11 +1208,14 @@ def __init__(self, addr: str) -> None:
             self.__arena = MallocStateStruct(addr)
             self.__addr = self.__arena.addr
 
-        self.top             = int(self.top)
-        self.last_remainder  = int(self.last_remainder)
-        self.n               = int(self.next)
-        self.nfree           = int(self.next_free)
-        self.sysmem          = int(self.system_mem)
+        try:
+            self.top             = int(self.top)
+            self.last_remainder  = int(self.last_remainder)
+            self.n               = int(self.next)
+            self.nfree           = int(self.next_free)
+            self.sysmem          = int(self.system_mem)
+        except gdb.error as e:
+            err("Glibc arena: {}".format(e))
         return
 
     def __getitem__(self, item):
@@ -1294,7 +1297,7 @@ def __str__(self):
         fmt = "{:s}(base={:#x}, top={:#x}, last_remainder={:#x}, next={:#x}, next_free={:#x}, system_mem={:#x})"
         return fmt.format(
             Color.colorify("Arena", "blue bold underline"),
-            self.__addr, self.top, self.last_remainder, self.next, self.nfree, self.sysmem
+            self.__addr, self.top, self.last_remainder, self.n, self.nfree, self.sysmem
         )
 
 
@@ -6789,7 +6792,7 @@ class GlibcHeapSetArenaCommand(GenericCommand):
     """Display information on a heap chunk."""
 
     _cmdline_ = "heap set-arena"
-    _syntax_  = "{:s} [address|symbol]".format(_cmdline_)
+    _syntax_  = "{:s} [address|&symbol]".format(_cmdline_)
     _example_ = "{:s} 0x001337001337".format(_cmdline_)
 
     def __init__(self) -> None:
diff --git a/tests/runtests.py b/tests/runtests.py
index 0bc631c3a..dccc34b7e 100755
--- a/tests/runtests.py
+++ b/tests/runtests.py
@@ -215,7 +215,7 @@ def test_cmd_heap_arenas(self):
         return
 
     def test_cmd_heap_set_arena(self):
-        cmd = "heap set-arena main_arena"
+        cmd = "heap set-arena &main_arena"
         target = _target("heap")
         self.assertFailIfInactiveSession(gdb_run_cmd(cmd, target=target))
         res = gdb_run_silent_cmd(cmd, target=target, after=["heap arenas"])