diff --git a/C9 Zven: CS per minute.png b/C9 Zven_CS per minute.png
similarity index 100%
rename from C9 Zven: CS per minute.png
rename to C9 Zven_CS per minute.png
diff --git a/C9 Zven: CSD at 10min.png b/C9 Zven_CSD at 10min.png
similarity index 100%
rename from C9 Zven: CSD at 10min.png
rename to C9 Zven_CSD at 10min.png
diff --git a/C9 Zven: Damage per gold spent.png b/C9 Zven_Damage per gold spent.png
similarity index 100%
rename from C9 Zven: Damage per gold spent.png
rename to C9 Zven_Damage per gold spent.png
diff --git a/C9 Zven: Vision Score.png b/C9 Zven_Vision Score.png
similarity index 100%
rename from C9 Zven: Vision Score.png
rename to C9 Zven_Vision Score.png
diff --git a/data_analysis.py b/data_analysis.py
index dd21075..8774fe1 100644
--- a/data_analysis.py
+++ b/data_analysis.py
@@ -18,6 +18,7 @@ def calc_average(data):
     return mean(clean_data)
 
 def make_plot(x, data, ylabel, title):
+    file_title = title.replace(": ", "_")
     fig, ax = plt.subplots()
     marker_style = dict(color='tab:blue', marker='o', markersize=4)
     plt.plot(x, data, linestyle='--', color='tab:blue')
@@ -32,7 +33,7 @@ def make_plot(x, data, ylabel, title):
     average= round(calc_average(data),2)
     note= 'Average over '+ str(num_matches)+' games: '+str(average)
     plt.text(-0.5, 0.98*max(list(filter((None).__ne__, data))), note, fontsize=10, bbox=dict(facecolor='green', alpha=0.75))
-    plt.savefig(title+".png")
+    plt.savefig(file_title+".png")
     
 #%% INITIALIZATION
 start_time = time.time()