diff --git a/pitzer.dat b/pitzer.dat
index 164e107a..e4006516 100644
--- a/pitzer.dat
+++ b/pitzer.dat
@@ -1,5 +1,5 @@
 # Pitzer.DAT for calculating pressure dependence of reactions
-#   and temperature dependence to 200 °C. With
+#   and temperature dependence to 200 °C. With
 #   molal volumina of aqueous species and of minerals, and
 #   critical temperatures and pressures of gases used in Peng-Robinson's EOS.
 # Details are given at the end of this file.