diff --git a/generate_font.py b/generate_font.py
index 6e6b9b7..239aa24 100755
--- a/generate_font.py
+++ b/generate_font.py
@@ -14,7 +14,7 @@ add_string(used_set,"1234567890")
 add_string(used_set,"Bat")
 add_string(used_set,"PV")
 add_string(used_set,"Out")
-add_string(used_set,"VA%+- ")
+add_string(used_set,"VA%+- .")
 add_string(used_set,"/-\\|")
 
 if "?" in used_set:
diff --git a/src/font.c b/src/font.c
index c501176..224e92f 100644
--- a/src/font.c
+++ b/src/font.c
@@ -51,6 +51,16 @@ unsigned char my_font_[][16] =
     0xff,0xff,
     0xff,0xff,
  },
+ {
+    0xff,0xff,
+    0xff,0xff,
+    0xff,0xff,
+    0xff,0xff,
+    0xff,0xff,
+    0xff,0xcf,
+    0xcf,0xff,
+    0xff,0xff,
+ },
  {
     0xff,0xff,
     0xff,0xfe,
@@ -269,6 +279,7 @@ char my_font_map_[]=
    '%',
    '+',
    '-',
+   '.',
    '/',
    '0',
    '1',