diff --git a/src/alignmentui.js b/src/alignmentui.js
index 7e8198b..6690cdc 100644
--- a/src/alignmentui.js
+++ b/src/alignmentui.js
@@ -13,10 +13,10 @@ import { createDropdown, addToolbarToDropdown } from '@ckeditor/ckeditor5-ui/src
 
 import { isSupported } from './utils';
 
-import alignLeftIcon from '../theme/icons/align-left.svg';
-import alignRightIcon from '../theme/icons/align-right.svg';
-import alignCenterIcon from '../theme/icons/align-center.svg';
-import alignJustifyIcon from '../theme/icons/align-justify.svg';
+import alignLeftIcon from '@ckeditor/ckeditor5-core/theme/icons/align-left.svg';
+import alignRightIcon from '@ckeditor/ckeditor5-core/theme/icons/align-right.svg';
+import alignCenterIcon from '@ckeditor/ckeditor5-core/theme/icons/align-center.svg';
+import alignJustifyIcon from '@ckeditor/ckeditor5-core/theme/icons/align-justify.svg';
 
 const icons = new Map( [
 	[ 'left', alignLeftIcon ],
diff --git a/tests/alignmentui.js b/tests/alignmentui.js
index a73d131..e0ddfa9 100644
--- a/tests/alignmentui.js
+++ b/tests/alignmentui.js
@@ -8,8 +8,8 @@
 import AlignmentEditing from '../src/alignmentediting';
 import AlignmentUI from '../src/alignmentui';
 
-import alignLeftIcon from '../theme/icons/align-left.svg';
-import alignRightIcon from '../theme/icons/align-right.svg';
+import alignLeftIcon from '@ckeditor/ckeditor5-core/theme/icons/align-left.svg';
+import alignRightIcon from '@ckeditor/ckeditor5-core/theme/icons/align-right.svg';
 
 import ClassicTestEditor from '@ckeditor/ckeditor5-core/tests/_utils/classictesteditor';
 
diff --git a/theme/icons/align-center.svg b/theme/icons/align-center.svg
deleted file mode 100644
index 4d5a61d..0000000
--- a/theme/icons/align-center.svg
+++ /dev/null
@@ -1 +0,0 @@
-<svg viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path d="M2 3.75c0 .414.336.75.75.75h14.5a.75.75 0 1 0 0-1.5H2.75a.75.75 0 0 0-.75.75zm0 8c0 .414.336.75.75.75h14.5a.75.75 0 1 0 0-1.5H2.75a.75.75 0 0 0-.75.75zm2.286 4c0 .414.336.75.75.75h9.928a.75.75 0 1 0 0-1.5H5.036a.75.75 0 0 0-.75.75zm0-8c0 .414.336.75.75.75h9.928a.75.75 0 1 0 0-1.5H5.036a.75.75 0 0 0-.75.75z"/></svg>
\ No newline at end of file
diff --git a/theme/icons/align-justify.svg b/theme/icons/align-justify.svg
deleted file mode 100644
index 277c3de..0000000
--- a/theme/icons/align-justify.svg
+++ /dev/null
@@ -1 +0,0 @@
-<svg viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path d="M2 3.75c0 .414.336.75.75.75h14.5a.75.75 0 1 0 0-1.5H2.75a.75.75 0 0 0-.75.75zm0 8c0 .414.336.75.75.75h14.5a.75.75 0 1 0 0-1.5H2.75a.75.75 0 0 0-.75.75zm0 4c0 .414.336.75.75.75h9.929a.75.75 0 1 0 0-1.5H2.75a.75.75 0 0 0-.75.75zm0-8c0 .414.336.75.75.75h14.5a.75.75 0 1 0 0-1.5H2.75a.75.75 0 0 0-.75.75z"/></svg>
\ No newline at end of file
diff --git a/theme/icons/align-left.svg b/theme/icons/align-left.svg
deleted file mode 100644
index bf1a932..0000000
--- a/theme/icons/align-left.svg
+++ /dev/null
@@ -1 +0,0 @@
-<svg viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path d="M2 3.75c0 .414.336.75.75.75h14.5a.75.75 0 1 0 0-1.5H2.75a.75.75 0 0 0-.75.75zm0 8c0 .414.336.75.75.75h14.5a.75.75 0 1 0 0-1.5H2.75a.75.75 0 0 0-.75.75zm0 4c0 .414.336.75.75.75h9.929a.75.75 0 1 0 0-1.5H2.75a.75.75 0 0 0-.75.75zm0-8c0 .414.336.75.75.75h9.929a.75.75 0 1 0 0-1.5H2.75a.75.75 0 0 0-.75.75z"/></svg>
\ No newline at end of file
diff --git a/theme/icons/align-right.svg b/theme/icons/align-right.svg
deleted file mode 100644
index 4d51b5b..0000000
--- a/theme/icons/align-right.svg
+++ /dev/null
@@ -1 +0,0 @@
-<svg viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path d="M18 3.75a.75.75 0 0 1-.75.75H2.75a.75.75 0 1 1 0-1.5h14.5a.75.75 0 0 1 .75.75zm0 8a.75.75 0 0 1-.75.75H2.75a.75.75 0 1 1 0-1.5h14.5a.75.75 0 0 1 .75.75zm0 4a.75.75 0 0 1-.75.75H7.321a.75.75 0 1 1 0-1.5h9.929a.75.75 0 0 1 .75.75zm0-8a.75.75 0 0 1-.75.75H7.321a.75.75 0 1 1 0-1.5h9.929a.75.75 0 0 1 .75.75z"/></svg>
\ No newline at end of file