diff --git a/assets/icons/internal/tick.png b/assets/icons/internal/tick.png
new file mode 100644
index 0000000..f6771da
Binary files /dev/null and b/assets/icons/internal/tick.png differ
diff --git a/assets/less/modules/inputs.import.less b/assets/less/modules/inputs.import.less
index 071c041..70e4e42 100644
--- a/assets/less/modules/inputs.import.less
+++ b/assets/less/modules/inputs.import.less
@@ -119,7 +119,7 @@ nav {
     top: 4px;
     left: 3px;
     content:"";
-    background:url('http://static.tumblr.com/upanoab/0hOmmcbuh/tick-sprite.png');
+    background:url(@checkbox-icon);
     width: 20px;
     height: 20px;
   }
@@ -134,7 +134,7 @@ nav {
     top: 4px;
     left: 2px;
     content:"";
-    background:url('http://static.tumblr.com/upanoab/0hOmmcbuh/tick-sprite.png');
+    background:url(@checkbox-icon);
     background-position:-20px;
     width: 22px;
     height: 22px;
@@ -161,7 +161,7 @@ nav {
       left: 4px;
       top: 4px;
       content:"";
-      background:url('http://static.tumblr.com/upanoab/0hOmmcbuh/tick-sprite.png');
+      background:url(@checkbox-icon);
       background-position:-23px;
     }
 
@@ -174,7 +174,7 @@ nav {
     left: 3px;
     top: 4px;
     content:"";
-    background:url('http://static.tumblr.com/upanoab/0hOmmcbuh/tick-sprite.png');
+    background:url(@checkbox-icon);
   }
 }
 
diff --git a/assets/less/variables.import.less b/assets/less/variables.import.less
index 0cacf35..bb9d9cf 100644
--- a/assets/less/variables.import.less
+++ b/assets/less/variables.import.less
@@ -110,6 +110,8 @@
 @icon-font-name:            "flat-ui-icons-regular";
 @icon-font-svg-id:          "flat-ui-icons-regular";
 
+@checkbox-icon:             "../icons/internal/tick.png"
+
 //** Icon sizes for use in components
 @icon-normal:               16px;
 @icon-medium:               18px;
@@ -190,7 +192,7 @@
 @input-line-height-large:   1.235; // ~21px
 @input-line-height-huge:    1.318; // ~29px
 
-@input-icon-font-size:      ceil(@component-font-size-base * 1.333);  // ~20px       
+@input-icon-font-size:      ceil(@component-font-size-base * 1.333);  // ~20px
 
 @input-bg:                  @inverse;
 @input-bg-disabled:         mix(@gray, white, 10%);
@@ -219,7 +221,7 @@
 @input-line-height-large:   1.235; // ~21px
 @input-line-height-huge:    1.318; // ~29px
 
-@input-icon-font-size:      ceil(@component-font-size-base * 1.333);  // ~20px       
+@input-icon-font-size:      ceil(@component-font-size-base * 1.333);  // ~20px
 
 @input-bg:                  @inverse;
 @input-bg-disabled:         mix(@gray, white, 10%);
diff --git a/smart.json b/smart.json
index 27d3aad..8eb413b 100644
--- a/smart.json
+++ b/smart.json
@@ -3,7 +3,7 @@
       "description": "Less-only Flat UI that doesn't require javascript",
       "homepage": "https://github.com/Rnhmjoj/flatter-ui",
       "author": "Michele Guerini Rocco <micheleguerinirocco@me.com>",
-      "version": "0.1.6",
+      "version": "0.1.7",
       "git": "https://github.com/rnhmjoj/flatter-ui.git",
       "packages": {}
 }