diff --git a/petrol-theme.el b/petrol-theme.el
index 5981429..fbfaab5 100644
--- a/petrol-theme.el
+++ b/petrol-theme.el
@@ -46,7 +46,11 @@
   "Petrol light color theme.")
 
 (let* ((class '((class color) (min-colors 89)))
-
+       ;;,--------------------
+       ;;| General variables.
+       ;;`--------------------
+       (petrol-line-numbers-height (- (face-attribute 'default :height) 10))
+       
        ;;,-----------------
        ;;| Generic colors.
        ;;`-----------------
@@ -60,7 +64,7 @@
        ;;,------------------
        ;;| Specific colors.
        ;;`------------------
-       (petrol-line-numbers-color "#eaeae1")
+       (petrol-line-numbers-bg "#eaeae1")
        
        ;;,--------------------------
        ;;| Specific face fragments.
@@ -100,10 +104,14 @@
    `(file-name-shadow ((,class (:foreground "#cccccc"))))
 
 
-   `(line-number ((,class (:background ,petrol-line-numbers-color
-                                       :foreground "#8c8c8c"))))
-   `(line-number-current-line ((,class (:background ,petrol-line-numbers-color
-                                                    :foreground "#cc6d00"))))
+   `(line-number ((,class (:background ,petrol-line-numbers-bg
+                                       :foreground "#8c8c8c"
+                                       :height ,petrol-line-numbers-height
+                                       ))))
+   `(line-number-current-line ((,class (:background ,petrol-line-numbers-bg
+                                                    :foreground "#cc6d00"
+                                                    :height ,petrol-line-numbers-height
+                                                    ))))
 
 
    `(linum ((,class (:background "#f2f2f2" :foreground "#8c8c8c"))))