diff --git a/rowers/interactiveplots.py b/rowers/interactiveplots.py
index 87a7ec9c..4d12d4fc 100644
--- a/rowers/interactiveplots.py
+++ b/rowers/interactiveplots.py
@@ -4209,7 +4209,7 @@ def forcecurve_multi_interactive_chart(selected):
     return (script, div)
 
 def instroke_multi_interactive_chart(selected, *args, **kwargs):
-    
+
     df_plot = pd.DataFrame()
     ids = [analysis.id for analysis in selected]
     metrics = list(set([analysis.metric for analysis in selected]))
@@ -4318,7 +4318,7 @@ def instroke_interactive_chart(df,metric, workout, spm_min, spm_max,
     df_pos = (df+abs(df))/2.
     df_min = -(-df+abs(-df))/2.
 
-    mean_vals = df.median()
+    mean_vals = df.median().replace(0, np.nan)
     q75 = df_pos.quantile(q=0.75).replace(0,np.nan)
     q25 = df_pos.quantile(q=0.25).replace(0,np.nan)
     q75min = df_min.quantile(q=0.75).replace(0,np.nan)
@@ -4453,7 +4453,12 @@ def instroke_interactive_chart(df,metric, workout, spm_min, spm_max,
 
     plot.add_tools(HoverTool(tooltips=TIPS))
 
-    script, div = components(plot)
+    try:
+        script, div = components(plot)
+    except ValueError:
+        script = ""
+        div = "Something went wrong with the chart"
+
 
     return (script, div)
 
diff --git a/rowers/templates/instroke_interactive.html b/rowers/templates/instroke_interactive.html
index 44e599a0..a7a42a44 100644
--- a/rowers/templates/instroke_interactive.html
+++ b/rowers/templates/instroke_interactive.html
@@ -89,6 +89,7 @@ $( function() {
     range: true,
     min: 0,
     max: {{ maxminutes }},
+    step: 0.1,
     values: [ {{ activeminutesmin }}, {{ activeminutesmax }} ],
     slide: function( event, ui ) {
       $( "#amount" ).val(ui.values[ 0 ] + " min - " + ui.values[ 1 ] + " min " );