diff --git a/src/lv_fonts/lv_font_dejavu_20.c b/src/lv_fonts/lv_font_dejavu_20.c
index 786e152cf..c7a77ca49 100644
--- a/src/lv_fonts/lv_font_dejavu_20.c
+++ b/src/lv_fonts/lv_font_dejavu_20.c
@@ -83,8 +83,8 @@ static const uint8_t lv_font_dejavu_20_glyph_bitmap[] = {
 
 
 static const lv_font_kern_t kern_0031[] = {
-        {.next_unicode = 0x0033, .space = 3 << 4},
-        {.next_unicode  = 0x0000}                       /*Trailing*/
+        {.next_unicode = 0x0033, .space = LV_FONT_SET_WIDTH(8, 0), .space_sign = LV_FONT_KERN_POSITIVE},
+        {.next_unicode  = 0x0000}   /*Trailing*/
 };
 
 /*Store the glyph descriptions*/
diff --git a/src/lv_misc/lv_font.c b/src/lv_misc/lv_font.c
index b72c87216..9de3fa9ba 100644
--- a/src/lv_misc/lv_font.c
+++ b/src/lv_misc/lv_font.c
@@ -42,7 +42,7 @@ static int32_t lv_font_codeCompare(const void * pRef, const void * pElement);
  **********************/
 
 /**
- * Initialize the fonts
+ * Initialize the font module
  */
 void lv_font_init(void)
 {
@@ -143,7 +143,11 @@ uint8_t lv_font_get_glyph_width(const lv_font_t * font, uint32_t letter, uint32_
         uint32_t i;
         for(i = 0; dsc.kern_table[i].next_unicode != 0; i++) {
             if((uint32_t)dsc.kern_table[i].next_unicode == letter_next) {
-                w += dsc.kern_table[i].space;
+                if(dsc.kern_table[i].space_sign == LV_FONT_KERN_POSITIVE) {
+                    w += dsc.kern_table[i].space;
+                } else {
+                    w -= dsc.kern_table[i].space;
+                }
                 break;
             }
         }
diff --git a/src/lv_misc/lv_font.h b/src/lv_misc/lv_font.h
index 63325c881..3c04ae404 100644
--- a/src/lv_misc/lv_font.h
+++ b/src/lv_misc/lv_font.h
@@ -41,8 +41,10 @@ extern "C" {
 
 /*One element of a kerning table*/
 typedef struct {
-    int32_t next_unicode    :23;
-    int32_t space           :9;       /*5 integer,  4 fractional*/
+    uint32_t next_unicode    :23;
+
+    uint32_t space           :8;       /*5 integer,  4 fractional*/
+    uint32_t space_sign      :1;       /*0: space positive; 1: space negative*/
 }lv_font_kern_t;
 
 /*Describe the properties of a glyph*/
@@ -202,6 +204,9 @@ bool lv_font_get_glyph_dsc_plain(const lv_font_t * font, lv_font_glyph_dsc_t * d
 #define LV_FONT_GET_WIDTH_INT(_w)       (_w >> LV_FONT_WIDTH_FRACT_DIGIT)
 #define LV_FONT_GET_WIDTH_FRACT(_w)     (_w & ((1 << LV_FONT_WIDTH_FRACT_DIGIT) -1))
 
+#define LV_FONT_KERN_POSITIVE        0
+#define LV_FONT_KERN_NEGATIVE        1
+
 
 /**********************
  * ADD BUILT IN FONTS