diff --git a/i3wrapper.py b/i3wrapper.py
index b81c717..b9a79e8 100755
--- a/i3wrapper.py
+++ b/i3wrapper.py
@@ -61,8 +61,11 @@ def _hwtemp(conf=THINKFAN_CONF):
         for line in tfc_fp.readlines():
             if not line.startswith('hwmon '):
                 continue
-            with open(line.split(' ')[1].strip()) as temp_fp:
-                temps.append(float(temp_fp.read()))
+            try:
+                with open(line.split(' ')[1].strip()) as temp_fp:
+                    temps.append(float(temp_fp.read()))
+            except (OSError, IOError) as exc:
+                sys.stderr.write(str(exc) + '\n')
 
     avg_temp = float(sum(temps)) / len(temps) / 1000.0
     color = None
@@ -102,15 +105,19 @@ def main(bits=_BITS):
 
         loaded = json.loads(line)
         for idx, name, func in bits:
-            value, color = func()
-            if value is None:
-                continue
-
-            record = dict(full_text=str(value), name=name)
-            if color is not None:
-                record.update(dict(color=color))
-
-            loaded.insert(idx, record)
+            try:
+                value, color = func()
+                if value is None:
+                    continue
+
+                record = dict(full_text=str(value), name=name)
+                if color is not None:
+                    record.update(dict(color=color))
+
+                loaded.insert(idx, record)
+            except Exception as exc:
+                sys.stderr.write(str(exc) + '\n')
+                sys.stderr.flush()
 
         _print_line(prefix+json.dumps(loaded))