diff --git a/apps/workflowengine/css/admin.scss b/apps/workflowengine/css/admin.scss
deleted file mode 100644
index 523bb7f8ba..0000000000
--- a/apps/workflowengine/css/admin.scss
+++ /dev/null
@@ -1,86 +0,0 @@
-.workflowengine {
-	.pull-right {
-		float: right
-	}
-
-	.invalid-input {
-		border-color: var(--color-error);
-	}
-
-	.operation {
-		padding: 5px 5px 20px;
-		margin-bottom: 20px;
-		border-bottom: var(--color-border) 1px solid;
-		border-left: rgba(0, 0, 0, 0) 2px solid;
-
-		&.modified {
-			border-left: var(--color-warning) 2px solid;
-		}
-
-		button {
-			margin-bottom: 0;
-		}
-
-		span.info {
-			padding: 7px;
-			color: var(--color-border);
-		}
-
-		.msg {
-			border-radius: 3px;
-			margin: 3px 3px 3px 0;
-			padding: 5px;
-			transition: opacity .5s;
-		}
-
-		.check {
-			padding-left: 5px;
-			&:hover {
-				background-color: var(--color-background-dark);
-			}
-		}
-
-		.button-delete,
-		.button-delete-check {
-			opacity: 0.5;
-			padding: 11px;
-
-			&:hover,
-			&:focus {
-				opacity: 1;
-				cursor: pointer;
-			}
-		}
-	}
-
-	.rules {
-		.icon-loading-small {
-			display: inline-block;
-			margin-right: 5px;
-		}
-
-		.operation:nth-last-child(2) {
-			margin-bottom: 5px;
-		}
-	}
-
-	.operation-header {
-		display: flex;
-		margin-left: 5px;
-
-		.operation-name {
-			width: 100%;
-			max-width: 500px;
-			align-self: flex-start;
-			padding: 10px;
-		}
-
-		.select2-container {
-			align-self: flex-end;
-		}
-
-		.icon-delete {
-			margin-left: auto;
-		}
-	}
-}
diff --git a/apps/workflowengine/css/multiselect.css b/apps/workflowengine/css/multiselect.css
deleted file mode 100644
index 0c3b8b009e..0000000000
--- a/apps/workflowengine/css/multiselect.css
+++ /dev/null
@@ -1,12 +0,0 @@
-#workflowengine .multiselect .multiselect__single {
-	display: flex;
-}
-
-#workflowengine .option__icon {
-	min-width: 25px;
-}
-
-#workflowengine input,
-#workflowengine .multiselect {
-	width: 100%;
-}
diff --git a/apps/workflowengine/templates/settings.php b/apps/workflowengine/templates/settings.php
index 2b8a825269..f306bb9e1f 100644
--- a/apps/workflowengine/templates/settings.php
+++ b/apps/workflowengine/templates/settings.php
@@ -19,7 +19,6 @@
  *
  */
 use OCA\WorkflowEngine\AppInfo\Application;
-style(Application::APP_ID, 'multiselect');
 
 /** @var array $_ */
 /** @var \OCP\IL10N $l */