diff --git a/config.py b/config.py
index 5203ba3..d9dd27a 100644
--- a/config.py
+++ b/config.py
@@ -43,7 +43,7 @@ GRAPHS = {
                 GraphLine('I_pv_in', 'Strom PV [A]', '#ff0000'),
                 GraphLine('I_load_total', 'Strom Last [A]', '#00ff00'),
                 ],
-        'realy' : [
+        'relay' : [
                 GraphLine('load_switch', 'Relay', '#0000ff'),
             ],
         'charges' : [
diff --git a/update.py b/update.py
index 943c450..3b1717d 100644
--- a/update.py
+++ b/update.py
@@ -84,7 +84,10 @@ def update_graphs():
             graph_params += ['DEF:%s=%s:%s:LAST' % (name, DATA_FILE, name)]
             graph_params += ['LINE1:%s%s:%s' % (name, color, lable)]
 
-        rrdtool.graph(*graph_params)
+        try:
+            rrdtool.graph(*graph_params)
+        except rrdtool.OperationalError:
+            print("Failed to render current data")
 
         # Also render Archives
         graph_params = ['%s_archive.png' % graph_name, '-a',
@@ -94,7 +97,10 @@ def update_graphs():
             graph_params += ['DEF:%s=%s:%s:AVERAGE' % (name, DATA_FILE, name)]
             graph_params += ['LINE1:%s%s:%s' % (name, color, lable)]
 
-        rrdtool.graph(*graph_params)
+        try:
+            rrdtool.graph(*graph_params)
+        except rrdtool.OperationalError:
+            print("Failed to render archive data")
 
 
 def upload_graphs():