diff --git a/nanovna.h b/nanovna.h
index 88a2b26..1981591 100644
--- a/nanovna.h
+++ b/nanovna.h
@@ -727,8 +727,9 @@ extern const uint8_t numfont16x22[];
 #define KP_Y_OFFSET               0                                                // numeric keypad Y offset
 #define KPF_WIDTH                 (LCD_WIDTH / 10)                                 // text keypad button width
 #define KPF_HEIGHT                KPF_WIDTH                                        // text keypad button height
+#define KPF_ROWS                  5                                                // text keypad rows (symbols, digits, 3 letter rows)
 #define KPF_X_OFFSET              0                                                // text keypad X offset
-#define KPF_Y_OFFSET              (LCD_HEIGHT - NUM_INPUT_HEIGHT - 4 * KPF_HEIGHT) // text keypad Y offset
+#define KPF_Y_OFFSET              (LCD_HEIGHT - NUM_INPUT_HEIGHT - KPF_ROWS * KPF_HEIGHT) // text keypad Y offset
 
 #define S_ENTER    "\026"  // 0x16
 #define S_DELTA    "\027"  // 0x17
diff --git a/ui.c b/ui.c
index 040c10e..643472e 100644
--- a/ui.c
+++ b/ui.c
@@ -1403,12 +1403,15 @@ static const keypads_t keypads_time[] = {
 };
 
 #ifdef __USE_SD_CARD__
+// Symbols on the top row are all legal in FAT long file names
+// ( '"', '*', '/', ':', '<', '>', '?', '\' and '|' are rejected by FatFs )
 static const keypads_t keypads_text[] = {
-  {40, TXT_KEYBOARD },   // size and position
-  {0x00, '1'}, {0x10, '2'}, {0x20, '3'}, {0x30, '4'}, {0x40, '5'}, {0x50, '6'}, {0x60, '7'}, {0x70, '8'}, {0x80, '9'}, {0x90, '0'},
-  {0x01, 'Q'}, {0x11, 'W'}, {0x21, 'E'}, {0x31, 'R'}, {0x41, 'T'}, {0x51, 'Y'}, {0x61, 'U'}, {0x71, 'I'}, {0x81, 'O'}, {0x91, 'P'},
-  {0x02, 'A'}, {0x12, 'S'}, {0x22, 'D'}, {0x32, 'F'}, {0x42, 'G'}, {0x52, 'H'}, {0x62, 'J'}, {0x72, 'K'}, {0x82, 'L'}, {0x92, '_'},
-  {0x03, '-'}, {0x13, 'Z'}, {0x23, 'X'}, {0x33, 'C'}, {0x43, 'V'}, {0x53, 'B'}, {0x63, 'N'}, {0x73, 'M'}, {0x83, C_LARROW}, {0x93, C_ENTER},
+  {50, TXT_KEYBOARD },   // size and position
+  {0x00, '.'}, {0x10, ','}, {0x20, '('}, {0x30, ')'}, {0x40, '['}, {0x50, ']'}, {0x60, '+'}, {0x70, '&'}, {0x80, '#'}, {0x90, '@'},
+  {0x01, '1'}, {0x11, '2'}, {0x21, '3'}, {0x31, '4'}, {0x41, '5'}, {0x51, '6'}, {0x61, '7'}, {0x71, '8'}, {0x81, '9'}, {0x91, '0'},
+  {0x02, 'Q'}, {0x12, 'W'}, {0x22, 'E'}, {0x32, 'R'}, {0x42, 'T'}, {0x52, 'Y'}, {0x62, 'U'}, {0x72, 'I'}, {0x82, 'O'}, {0x92, 'P'},
+  {0x03, 'A'}, {0x13, 'S'}, {0x23, 'D'}, {0x33, 'F'}, {0x43, 'G'}, {0x53, 'H'}, {0x63, 'J'}, {0x73, 'K'}, {0x83, 'L'}, {0x93, '_'},
+  {0x04, '-'}, {0x14, 'Z'}, {0x24, 'X'}, {0x34, 'C'}, {0x44, 'V'}, {0x54, 'B'}, {0x64, 'N'}, {0x74, 'M'}, {0x84, C_LARROW}, {0x94, C_ENTER},
 };
 #endif