diff --git a/speedtester.py b/speedtester.py
index ecb0dcf..942f431 100644
--- a/speedtester.py
+++ b/speedtester.py
@@ -44,8 +44,8 @@ def generate_plot_image(dates, downloads, uploads, name="speed", description="Sp
 
     dates = matplotlib.dates.date2num(dates)
     fig = plt.figure(figsize=(15, 3))
-    plt.plot_date(dates, downloads, linestyle='solid', color="red", linewidth=2)
-    plt.plot_date(dates, uploads, linestyle='dashed', color="green", linewidth=0.5)
+    plt.plot_date(dates, downloads, linestyle='solid', color="red", linewidth=2, marker=None)
+    plt.plot_date(dates, uploads, linestyle='dashed', color="green", linewidth=0.5, marker=None)
     plt.ylabel(description + " (Mbps)")
     plt.tight_layout()
     plt.savefig(read_config()['output_image_path'].format(name))
@@ -67,8 +67,8 @@ def generate_diff(dates, downloads, uploads):
 
 def generate_updown_plot_simple(downloads, uploads, name, description):
     fig = plt.figure(figsize=(10, 3))
-    plt.plot(downloads, linestyle='solid', color="red", linewidth=2)
-    plt.plot(uploads, linestyle='dashed', color="green", linewidth=0.5)
+    plt.plot(downloads, linestyle='solid', color="red", linewidth=2, marker=None)
+    plt.plot(uploads, linestyle='dashed', color="green", linewidth=0.5, marker=None)
     plt.ylabel(description + " (Mbps)")
     plt.tight_layout()
     plt.savefig(read_config()['output_image_path'].format(name))