diff --git a/dfm/README.md b/dfm/README.md
index 85be751..18804f9 100644
--- a/dfm/README.md
+++ b/dfm/README.md
@@ -13,7 +13,7 @@
   * `<audio.wav>`: FM-demodulated signal, recorded as wav audio file
   * `options`: <br />
       `-i`: invert signal/polarity (DFM-09)<br />
-      `-b`, `-b2`: integrate rawbit-/symbol-samples<br />
+      `-b`, `-b2`: integrate rawbit-/bit-samples<br />
       `-r`: output raw data <br />
      `-v`: additional info <br />
      `--ecc`: Hamming code error correction <br />
@@ -27,7 +27,7 @@
   a lowpass filter is recommended:
   * `sox dfm-audio.wav -t wav - lowpass 2000 2>/dev/null | ./dfm06ptu --ecc --ptu -v`
 
-  If timing/sync is not an issue, integrating the symbol-samples (option `-b2`) is better for error correction:
+  If timing/sync is not an issue, integrating the bit-samples (option `-b2`) is better for error correction:
   * `./dfm06ptu -b2 --ecc --ptu -v dfm-audio.wav`
 
   For DFM-09 or if the signal is inverted
diff --git a/m10/README.md b/m10/README.md
index 2db5f5e..1f39a4b 100644
--- a/m10/README.md
+++ b/m10/README.md
@@ -19,7 +19,7 @@ Tools for decoding M10 radiosonde signals.
      `-r`: output raw data <br />
      `-v`, `-vv`: additional data/info (velocities, SN, checksum) <br />
      `-c`: colored output <br />
-     `-b`, `-b2`: integrate rawbit-/symbol-samples <br />
+     `-b`, `-b2`: integrate rawbit-/bit-samples <br />
 
 
   ##### Examples
@@ -32,7 +32,7 @@ Tools for decoding M10 radiosonde signals.
 
   If the signal quality is low and (default) zero-crossing-demod is used,
   a lowpass filter is recommended.
-  If sample rate is high and timing/sync is not an issue, try integrating the symbol-samples (option `-b2`).
+  If sample rate is high and timing/sync is not an issue, try integrating the bit-samples (option `-b2`).
 
 
  #####