diff --git a/application/controllers/api/frontend/v1/lv/Config.php b/application/controllers/api/frontend/v1/lv/Config.php
index 4f39c6b8b..3c4019eb8 100644
--- a/application/controllers/api/frontend/v1/lv/Config.php
+++ b/application/controllers/api/frontend/v1/lv/Config.php
@@ -19,12 +19,12 @@ class Config extends FHCAPI_Controller
 		$this->_setAuthUID();
 
 		$this->loadPhrases([
-			'lehre'
+			'lehre',
+			'stv'
 		]);
 
 		$this->_ci->load->library('VariableLib', ['uid' => $this->_uid]);
 		$this->_ci->load->library('PermissionLib');
-
 	}
 
 
@@ -55,15 +55,47 @@ class Config extends FHCAPI_Controller
 			"value" => $ignore_reservierung,
 		];
 
+		$result = $this->VariableModel->getVariables(getAuthUID(), ['font_size']);
+		$data = $this->getDataOrTerminateWithError($result);
+		$config['font_size'] = [
+			"type" => "select",
+			"label" => $this->p->t('stv', 'settings_fontsize'),
+			"value" => $data['font_size'] ?? "fs_normal",
+			"options" => [
+				"fs_xx-small" => $this->p->t('stv', 'settings_fontsize_xx-small'),
+				"fs_x-small" => $this->p->t('stv', 'settings_fontsize_x-small'),
+				"fs_small" => $this->p->t('stv', 'settings_fontsize_small'),
+				"fs_normal" => $this->p->t('stv', 'settings_fontsize_normal'),
+				"fs_big" => $this->p->t('stv', 'settings_fontsize_big'),
+				"fs_huge" => $this->p->t('stv', 'settings_fontsize_huge')
+			]
+		];
+
 		$this->terminateWithSuccess($config);
 	}
 	public function set()
 	{
+		$this->load->model('system/Variable_model', 'VariableModel');
+		$this->load->library('form_validation');
+
+		$this->form_validation->set_rules(
+			'font_size',
+			$this->p->t('stv', 'settings_fontsize'),
+			'required|in_list[fs_xx-small,fs_x-small,fs_small,fs_normal,fs_big,fs_huge]'
+		);
+
+		if (!$this->form_validation->run())
+			$this->terminateWithValidationErrors($this->form_validation->error_array());
+
+		$this->VariableModel->setVariable(
+			getAuthUID(),
+			'font_size',
+			$this->input->post('font_size')
+		);
+
 		if (!($this->permissionlib->isBerechtigt('basis/tempus')) && !($this->permissionlib->isBerechtigt('lv-plan')))
 			$this->terminateWithSuccess([]);
 
-		$this->load->model('system/Variable_model', 'VariableModel');
-
 		foreach (['ignore_kollision','ignore_zeitsperre','ignore_reservierung'] as $variable)
 		{
 			if ($this->_ci->input->post($variable) !== null)
diff --git a/application/controllers/api/frontend/v1/stv/Config.php b/application/controllers/api/frontend/v1/stv/Config.php
index cc6c04430..0b859e06d 100644
--- a/application/controllers/api/frontend/v1/stv/Config.php
+++ b/application/controllers/api/frontend/v1/stv/Config.php
@@ -80,12 +80,12 @@ class Config extends FHCAPI_Controller
 		];
 
 		#font_size
-		$result = $this->VariableModel->getVariables(getAuthUID(), ['stv_font_size']);
+		$result = $this->VariableModel->getVariables(getAuthUID(), ['font_size']);
 		$data = $this->getDataOrTerminateWithError($result);
 		$config['font_size'] = [
 			"type" => "select",
 			"label" => $this->p->t('stv', 'settings_fontsize'),
-			"value" => $data['stv_font_size'] ?? "fs_normal",
+			"value" => $data['font_size'] ?? "fs_normal",
 			"options" => [
 				"fs_xx-small" => $this->p->t('stv', 'settings_fontsize_xx-small'),
 				"fs_x-small" => $this->p->t('stv', 'settings_fontsize_x-small'),
@@ -136,7 +136,7 @@ class Config extends FHCAPI_Controller
 		);
 		$this->VariableModel->setVariable(
 			getAuthUID(),
-			'stv_font_size',
+			'font_size',
 			$this->input->post('font_size')
 		);
 
diff --git a/public/js/components/AppConfig.js b/public/js/components/AppConfig.js
index b6b6aaeac..df8e14a1d 100644
--- a/public/js/components/AppConfig.js
+++ b/public/js/components/AppConfig.js
@@ -66,10 +66,28 @@ export default {
 					})
 					.catch(this.$fhcAlert.handleSystemErrors);
 			}
-		}
+		},
+		'modelValue.font_size'(fontSize) {
+			this.applyFontSize(fontSize);
+		},
 
 	},
 	methods: {
+		applyFontSize(fontSize) {
+			const options = this.setup.font_size?.options;
+
+			if (!fontSize || !options)
+				return;
+
+			Object.keys(options).forEach(cn => document.documentElement.classList.remove(cn));
+			document.documentElement.classList.add(fontSize);
+
+			document.querySelectorAll('.tabulator').forEach(el => {
+				const tabulators = Tabulator.findTable(el);
+				if (tabulators)
+					tabulators[0].searchRows().forEach(row => row.normalizeHeight());
+			});
+		},
 		update() {
 			this.$refs.form
 				.call(this.endpoints.set(this.tempValues))
diff --git a/public/js/components/Stv/Studentenverwaltung.js b/public/js/components/Stv/Studentenverwaltung.js
index b9ee54526..da3ec5244 100644
--- a/public/js/components/Stv/Studentenverwaltung.js
+++ b/public/js/components/Stv/Studentenverwaltung.js
@@ -295,22 +295,6 @@ export default {
 				this.$refs.stvList.updateUrl(n || []);
 			}
 		},
-		'appconfig.font_size'() {
-			// add to html class
-			const classList = Object.keys(this.$refs.config.setup.font_size.options);
-			classList.forEach(cn => document.documentElement.classList.remove(cn));
-			document.documentElement.classList.add(this.appconfig.font_size);
-			// recalc Tabulator heights
-			if (this.$el) {
-				const tabulatorEls = this.$el.querySelectorAll('.tabulator');
-				for (const el of tabulatorEls) {
-					const tabulators = Tabulator.findTable(el);
-					if (tabulators) {
-						tabulators[0].searchRows().forEach(row => row.normalizeHeight());
-					}
-				}
-			}
-		},
 		sidebarCollapsed(newVal) {
 			if(newVal) this.$refs.hSplit.collapseLeft()
 			else this.$refs.hSplit.showBoth()
diff --git a/system/dbupdate_3.4.php b/system/dbupdate_3.4.php
index 0392937ec..f621912cc 100644
--- a/system/dbupdate_3.4.php
+++ b/system/dbupdate_3.4.php
@@ -87,7 +87,6 @@ require_once('dbupdate_3.4/62063_lv_evaluierung.php');
 require_once('dbupdate_3.4/67490_studstatus_suche_abort_controller_haengt.php');
 require_once('dbupdate_3.4/61164_abgabetool_quality_gates.php');
 require_once('dbupdate_3.4/69065_Projektarbeiten_Firmen_verwalten.php');
-require_once('dbupdate_3.4/68744_StV_settings.php');
 require_once('dbupdate_3.4/62889_reihungstest_ueberwachung_mit_constructor.php');
 require_once('dbupdate_3.4/71399_dashboard_update_widget_paths.php');
 require_once('dbupdate_3.4/71645_studvw_messagetab_ladezeit.php');
@@ -103,6 +102,7 @@ require_once('dbupdate_3.4/76160_lvv_favorites.php');
 require_once('dbupdate_3.4/77080_tabulator_presets_table.php');
 require_once('dbupdate_3.4/78292_gehaltsanpassungtyp.php');
 require_once('dbupdate_3.4/54225_reihungstest_ablauf_fuer_quereinsteiger.php');
+require_once('dbupdate_3.4/83591_lvverwaltung_zoom_faktor.php');
 
 
 // *** Pruefung und hinzufuegen der neuen Attribute und Tabellen
diff --git a/system/dbupdate_3.4/68744_StV_settings.php b/system/dbupdate_3.4/68744_StV_settings.php
deleted file mode 100644
index 73b105ce0..000000000
--- a/system/dbupdate_3.4/68744_StV_settings.php
+++ /dev/null
@@ -1,16 +0,0 @@
-<?php
-if (!defined('DB_NAME')) exit('No direct script access allowed');
-
-// Add new name type in public.tbl_variablenname
-if ($result = @$db->db_query("SELECT 1 FROM public.tbl_variablenname WHERE name = 'stv_font_size';"))
-{
-	if ($db->db_num_rows($result) == 0)
-	{
-		$qry = "INSERT INTO public.tbl_variablenname(name, defaultwert) VALUES('stv_font_size', null);";
-
-		if (!$db->db_query($qry))
-			echo '<strong>public.tbl_variablenname '.$db->db_last_error().'</strong><br>';
-		else
-			echo 'public.tbl_variablenname: Added name "stv_font_size"<br>';
-	}
-}
diff --git a/system/dbupdate_3.4/83591_lvverwaltung_zoom_faktor.php b/system/dbupdate_3.4/83591_lvverwaltung_zoom_faktor.php
new file mode 100644
index 000000000..ba6aa2f40
--- /dev/null
+++ b/system/dbupdate_3.4/83591_lvverwaltung_zoom_faktor.php
@@ -0,0 +1,21 @@
+<?php
+if (!defined('DB_NAME')) exit('No direct script access allowed');
+
+// Add new name type in public.tbl_variablenname
+if ($result = @$db->db_query("SELECT 1 FROM public.tbl_variablenname WHERE name = 'font_size';"))
+{
+	if ($db->db_num_rows($result) == 0)
+	{
+		$qry = "INSERT INTO public.tbl_variablenname(name, defaultwert) VALUES('font_size', null);
+				UPDATE public.tbl_variable SET name = 'font_size' WHERE name = 'stv_font_size';
+				DELETE FROM public.tbl_variablenname WHERE name = 'stv_font_size';
+";
+
+		if (!$db->db_query($qry))
+			echo '<strong>public.tbl_variablenname '.$db->db_last_error().'</strong><br>';
+		else
+			echo 'public.tbl_variablenname: Added name "font_size"<br>';
+			echo 'public.tbl_variable: Updated name "stv_font_size" to "font_size"<br>';
+			echo 'public.tbl_variablenname: Deleted name "stv_font_size"<br>';
+	}
+}