diff --git a/mdevaluate/reader.py b/mdevaluate/reader.py
index 5aedb18..e889322 100755
--- a/mdevaluate/reader.py
+++ b/mdevaluate/reader.py
@@ -242,7 +242,7 @@ def energy_reader(file, energies=None):
                 header = i
                 break
 
-    data = np.genfromtxt(f"{directory}/tmp.xvg", skip_header=header)
+    data = np.loadtxt(f"{directory}/tmp.xvg", skiprows=header)
 
     df = pd.DataFrame({"Time":data[:,0]})
     for i, label in enumerate(labels):