diff --git a/src/lang/spanish.txt b/src/lang/spanish.txt
index 17d3e0114c..7966405e4d 100644
--- a/src/lang/spanish.txt
+++ b/src/lang/spanish.txt
@@ -8,7 +8,7 @@
 ##decimalsep ,
 ##winlangid 0x0c0a
 ##grflangid 0x04
-##gender m f
+##gender m f mp fp
 
 
 # This file is part of OpenTTD.
diff --git a/src/lang/spanish_MX.txt b/src/lang/spanish_MX.txt
index 40cce07736..ce429af8b4 100644
--- a/src/lang/spanish_MX.txt
+++ b/src/lang/spanish_MX.txt
@@ -8,7 +8,7 @@
 ##decimalsep .
 ##winlangid 0x080a
 ##grflangid 0x55
-##gender m f
+##gender m f mp fp
 
 
 # This file is part of OpenTTD.