diff --git a/concho/config.py b/concho/config.py
index 440bf54..78cf33a 100644
--- a/concho/config.py
+++ b/concho/config.py
@@ -36,7 +36,7 @@ class Cpu(Item):
 
     def __init__(self, proc_id):
         super().__init__(proc_id)
-        cpuTable = numpy.genfromtxt('cpu_table.dat', dtype=("|U32", float, int, float, float, float), names=True, delimiter='\t')
+        cpuTable = numpy.genfromtxt('cpu_table.tsv', dtype=("|U32", float, int, float, float, float), names=True, delimiter='\t')
         for cpu_id, clock, num_cores, tdp, cpumark in zip(cpuTable['id'], cpuTable['clock'], cpuTable['num_cores'], cpuTable['tdp'], cpuTable['cpumark_1_cpu']):
             # print(cpu_id)
             if cpu_id == proc_id:
diff --git a/concho/procs_chooser.py b/concho/procs_chooser.py
index b7d3658..9e70a39 100644
--- a/concho/procs_chooser.py
+++ b/concho/procs_chooser.py
@@ -25,7 +25,7 @@ def get_marker(proc_id):
     return markerTypes[ hash % len(markerTypes) ]
 
 def plotCpuPassmark():
-    cpuTable = numpy.genfromtxt('cpu_table.dat', dtype=("|U10", float, int, float, float), names=True, delimiter='\t')
+    cpuTable = numpy.genfromtxt('cpu_table.tsv', dtype=("|U10", float, int, float, float), names=True, delimiter='\t')
     plt.subplot(1,1,0)
     plt.subplots_adjust(bottom = 0.1)
     markersCycler = itertools.cycle(itertools.product(markerTypes, markerColors))
diff --git a/cpu_table.dat b/cpu_table.tsv
similarity index 100%
rename from cpu_table.dat
rename to cpu_table.tsv