diff --git a/src/content/actions/operation.js b/src/content/actions/operation.js
index 0d5088b..1302404 100644
--- a/src/content/actions/operation.js
+++ b/src/content/actions/operation.js
@@ -8,8 +8,10 @@ import * as consoleFrames from 'content/console-frames';
 
 const exec = (operation) => {
   switch (operation.type) {
-  case operations.SCROLL_LINES:
-    return scrolls.scrollLines(window, operation.count);
+  case operations.SCROLL_VERTICALLY:
+    return scrolls.scrollVertically(window, operation.count);
+  case operations.SCROLL_HORIZONALLY:
+    return scrolls.scrollHorizonally(window, operation.count);
   case operations.SCROLL_PAGES:
     return scrolls.scrollPages(window, operation.count);
   case operations.SCROLL_TOP:
diff --git a/src/content/scrolls.js b/src/content/scrolls.js
index b1cea6f..90bcc54 100644
--- a/src/content/scrolls.js
+++ b/src/content/scrolls.js
@@ -1,8 +1,15 @@
-const SCROLL_DELTA = 48;
+const SCROLL_DELTA_X = 48;
+const SCROLL_DELTA_Y = 48;
 
-const scrollLines = (page, count) => {
+const scrollVertically = (page, count) => {
   let x = page.scrollX;
-  let y = page.scrollY + SCROLL_DELTA * count;
+  let y = page.scrollY + SCROLL_DELTA_X * count;
+  page.scrollTo(x, y);
+};
+
+const scrollHorizonally = (page, count) => {
+  let x = page.scrollX + SCROLL_DELTA_Y * count;
+  let y = page.scrollY;
   page.scrollTo(x, y);
 };
 
@@ -38,5 +45,6 @@ const scrollRight = (page) => {
 };
 
 export {
-  scrollLines, scrollPages, scrollTop, scrollBottom, scrollLeft, scrollRight
+  scrollVertically, scrollHorizonally, scrollPages,
+  scrollTop, scrollBottom, scrollLeft, scrollRight
 };
diff --git a/src/shared/default-settings.js b/src/shared/default-settings.js
index 8db7727..ceacb50 100644
--- a/src/shared/default-settings.js
+++ b/src/shared/default-settings.js
@@ -11,8 +11,10 @@ export default {
     "w": { "type": "command.show.winopen", "alter": false },
     "W": { "type": "command.show.winopen", "alter": true },
     "b": { "type": "command.show.buffer" },
-    "k": { "type": "scroll.lines", "count": -1 },
-    "j": { "type": "scroll.lines", "count": 1 },
+    "k": { "type": "scroll.vertically", "count": -1 },
+    "j": { "type": "scroll.vertically", "count": 1 },
+    "h": { "type": "scroll.horizonally", "count": -1 },
+    "l": { "type": "scroll.horizonally", "count": 1 },
     "<C-E>": { "type": "scroll.lines", "count": -1 },
     "<C-Y>": { "type": "scroll.lines", "count": 1 },
     "<C-U>": { "type": "scroll.pages", "count": -0.5 },
diff --git a/src/shared/operations.js b/src/shared/operations.js
index ca62716..0d2a381 100644
--- a/src/shared/operations.js
+++ b/src/shared/operations.js
@@ -7,7 +7,8 @@ export default {
   COMMAND_SHOW_BUFFER: 'command.show.buffer',
 
   // Scrolls
-  SCROLL_LINES: 'scroll.lines',
+  SCROLL_VERTICALLY: 'scroll.vertically',
+  SCROLL_HORIZONALLY: 'scroll.horizonally',
   SCROLL_PAGES: 'scroll.pages',
   SCROLL_TOP: 'scroll.top',
   SCROLL_BOTTOM: 'scroll.bottom',