diff --git a/kiplot/out_position.py b/kiplot/out_position.py
index d14a4fee..492e11a7 100644
--- a/kiplot/out_position.py
+++ b/kiplot/out_position.py
@@ -17,7 +17,7 @@ class PositionOptions(BaseOptions):
             self.only_smd = True
             """ only include the surface mount components """
             self.output = '%f-%i.%x'
-            """ output file name (%i='top'|'bottom'|'both', %x='pos'|'csv') """
+            """ output file name (%i='top_pos'|'bottom_pos'|'both_pos', %x='pos'|'csv') """
             self.units = 'millimeters'
             """ [millimeters,inches] units used for the positions """  # pragma: no cover
 
@@ -26,10 +26,10 @@ class PositionOptions(BaseOptions):
         botf = None
         bothf = None
         if self.separate_files_for_front_and_back:
-            topf = open(self.expand_filename(output_dir, self.output, 'top', 'pos'), 'w')
-            botf = open(self.expand_filename(output_dir, self.output, 'bottom', 'pos'), 'w')
+            topf = open(self.expand_filename(output_dir, self.output, 'top_pos', 'pos'), 'w')
+            botf = open(self.expand_filename(output_dir, self.output, 'bottom_pos', 'pos'), 'w')
         else:
-            bothf = open(self.expand_filename(output_dir, self.output, 'both', 'pos'), 'w')
+            bothf = open(self.expand_filename(output_dir, self.output, 'both_pos', 'pos'), 'w')
 
         files = [f for f in [topf, botf, bothf] if f is not None]
         for f in files:
@@ -84,10 +84,10 @@ class PositionOptions(BaseOptions):
         botf = None
         bothf = None
         if self.separate_files_for_front_and_back:
-            topf = open(self.expand_filename(output_dir, self.output, 'top', 'csv'), 'w')
-            botf = open(self.expand_filename(output_dir, self.output, 'bottom', 'csv'), 'w')
+            topf = open(self.expand_filename(output_dir, self.output, 'top_pos', 'csv'), 'w')
+            botf = open(self.expand_filename(output_dir, self.output, 'bottom_pos', 'csv'), 'w')
         else:
-            bothf = open(self.expand_filename(output_dir, self.output, 'both', 'csv'), 'w')
+            bothf = open(self.expand_filename(output_dir, self.output, 'both_pos', 'csv'), 'w')
 
         files = [f for f in [topf, botf, bothf] if f is not None]
 
diff --git a/tests/test_plot/test_position.py b/tests/test_plot/test_position.py
index 60f34882..cdf4e447 100644
--- a/tests/test_plot/test_position.py
+++ b/tests/test_plot/test_position.py
@@ -88,7 +88,7 @@ def test_3Rs_position_unified():
 def test_3Rs_position_unified_th():
     ctx = context.TestContext('3Rs_position_unified_th', '3Rs', 'simple_position_unified_th', POS_DIR)
     ctx.run()
-    expect_position(ctx, os.path.join(POS_DIR, ctx.board_name+'-both-pos.pos'), ['R1', 'R2', 'R3'])
+    expect_position(ctx, os.path.join(POS_DIR, ctx.board_name+'-position.pos'), ['R1', 'R2', 'R3'])
     ctx.clean_up()
 
 
diff --git a/tests/utils/context.py b/tests/utils/context.py
index 2f0c282a..406b92f1 100644
--- a/tests/utils/context.py
+++ b/tests/utils/context.py
@@ -96,22 +96,22 @@ class TestContext(object):
         return os.path.join(self.sub_dir, self.board_name+'-'+layer_slug+ext)
 
     def get_pos_top_filename(self):
-        return os.path.join(self.sub_dir, self.board_name+'-top.pos')
+        return os.path.join(self.sub_dir, self.board_name+'-top_pos.pos')
 
     def get_pos_bot_filename(self):
-        return os.path.join(self.sub_dir, self.board_name+'-bottom.pos')
+        return os.path.join(self.sub_dir, self.board_name+'-bottom_pos.pos')
 
     def get_pos_both_filename(self):
-        return os.path.join(self.sub_dir, self.board_name+'-both.pos')
+        return os.path.join(self.sub_dir, self.board_name+'-both_pos.pos')
 
     def get_pos_top_csv_filename(self):
-        return os.path.join(self.sub_dir, self.board_name+'-top.csv')
+        return os.path.join(self.sub_dir, self.board_name+'-top_pos.csv')
 
     def get_pos_bot_csv_filename(self):
-        return os.path.join(self.sub_dir, self.board_name+'-bottom.csv')
+        return os.path.join(self.sub_dir, self.board_name+'-bottom_pos.csv')
 
     def get_pos_both_csv_filename(self):
-        return os.path.join(self.sub_dir, self.board_name+'-both.csv')
+        return os.path.join(self.sub_dir, self.board_name+'-both_pos.csv')
 
     def get_pth_drl_filename(self):
         return os.path.join(self.sub_dir, self.board_name+'-PTH.drl')
diff --git a/tests/yaml_samples/simple_position_unified_th.kiplot.yaml b/tests/yaml_samples/simple_position_unified_th.kiplot.yaml
index 42b36a4d..ffbf58f5 100644
--- a/tests/yaml_samples/simple_position_unified_th.kiplot.yaml
+++ b/tests/yaml_samples/simple_position_unified_th.kiplot.yaml
@@ -12,5 +12,5 @@ outputs:
       format: ASCII   # CSV or ASCII format
       units: millimeters  # millimeters or inches
       separate_files_for_front_and_back: false
-      output: '%f-%i-pos.%x'
+      output: '%f-position.%x'
       only_smd: false