diff --git a/lib/sdf.c b/lib/sdf.c
index c771fa3b..d5f115b0 100644
--- a/lib/sdf.c
+++ b/lib/sdf.c
@@ -57,7 +57,7 @@ struct {
 	{'C',  34},
 	{'D',  36},
 	{'E',  34},
-	{'F',  35},
+	{'F',  34},
 	{'G',  35},
 	{'H',  35},
 	{'I',  22},
@@ -70,7 +70,7 @@ struct {
 	{'P',  35},
 	{'Q',  38},
 	{'R',  36},
-	{'S',  36},
+	{'S',  35},
 	{'T',  35},
 	{'U',  35},
 	{'V',  37},
@@ -86,24 +86,24 @@ struct {
 	{'`',  35},
 	{'a',  32},
 	{'b',  32},
-	{'c',  32},
+	{'c',  29},
 	{'d',  32},
 	{'e',  32},
-	{'f',  30},
+	{'f',  25},
 	{'g',  32},
 	{'h',  32},
 	{'i',  16},
 	{'j',  16},
 	{'k',  30},
 	{'l',  16},
-	{'m',  48},
-	{'n',  34},
+	{'m',  47},
+	{'n',  33},
 	{'o',  32},
 	{'p',  32},
 	{'q',  32},
 	{'r',  25},
-	{'s',  32},
-	{'t',  29},
+	{'s',  31},
+	{'t',  26},
 	{'u',  32},
 	{'v',  32},
 	{'w',  42},