diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 234b783e..c5cc1f3b 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -3,8 +3,8 @@
 <manifest xmlns:a="http://schemas.android.com/apk/res/android"
 		  package="org.solovyev.android.calculator"
 		  a:installLocation="auto"
-		  a:versionCode="13"
-		  a:versionName="1.1.13">
+		  a:versionCode="14"
+		  a:versionName="1.1.14">
 
 	<uses-permission a:name="android.permission.VIBRATE"/>
 
diff --git a/res/values-ru/strings.xml b/res/values-ru/strings.xml
index 0328b7d1..f1cec660 100644
--- a/res/values-ru/strings.xml
+++ b/res/values-ru/strings.xml
@@ -86,6 +86,12 @@
 	<string name="c_history_is_empty">История пуста!</string>
 	<string name="c_app_history">История</string>
 	<string name="c_char_is_not_accepted">Символ \'%s\' не допустим в названии переменной!</string>
+
+	<string name="c_calc_angle_units">Единицы измерения углов</string>
+	<string name="p_deg">Градусы</string>
+	<string name="p_rad">Радианы</string>
+	<string name="c_angle_units_summary">Определяет единицы измерения углов.</string>
+
 	<string name="c_calc_theme">Тема оформления</string>
 	<string name="p_default_theme">По умолчанию</string>
 	<string name="p_violet_theme">Фиолетовая</string>
diff --git a/res/values/arrays.xml b/res/values/arrays.xml
index 3e88a0d8..09678b12 100644
--- a/res/values/arrays.xml
+++ b/res/values/arrays.xml
@@ -47,4 +47,13 @@
 		<item>100</item>
 	</string-array>
 
+	<string-array name="p_angle_units_names">
+		<item>@string/p_deg</item>
+		<item>@string/p_rad</item>
+	</string-array>
+	<string-array name="p_angle_units">
+		<item>deg</item>
+		<item>rad</item>
+	</string-array>
+
 </resources>
\ No newline at end of file
diff --git a/res/values/default_values.xml b/res/values/default_values.xml
index 80035004..e50b56ad 100644
--- a/res/values/default_values.xml
+++ b/res/values/default_values.xml
@@ -27,6 +27,9 @@
 
 	<string name="p_calc_vars">org.solovyev.android.calculator.CalculatorModel_vars</string>
 
+	<string name="p_calc_angle_units_key">org.solovyev.android.calculator.CalculatorActivity_angle_units</string>
+	<string name="p_calc_angle_units">deg</string>
+
 	<string name="p_calc_theme_key">org.solovyev.android.calculator.CalculatorActivity_calc_theme</string>
 	<string name="p_calc_theme">default_theme</string>
 
diff --git a/res/values/strings.xml b/res/values/strings.xml
index 518c131f..cc6ff1ff 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -87,6 +87,12 @@
 	<string name="c_history_is_empty">History is empty!</string>
 	<string name="c_app_history">History</string>
 	<string name="c_char_is_not_accepted">Character \'%s\' is not accepted in variable name!</string>
+
+	<string name="c_calc_angle_units">Angle Units</string>
+	<string name="p_deg">Degrees</string>
+	<string name="p_rad">Radians</string>
+	<string name="c_angle_units_summary">Defines the default units for angles.</string>
+
 	<string name="c_calc_theme">Theme</string>
 	<string name="p_default_theme">Default</string>
 	<string name="p_violet_theme">Violet</string>
diff --git a/res/xml/main_preferences.xml b/res/xml/main_preferences.xml
index 14adcc94..1712593d 100644
--- a/res/xml/main_preferences.xml
+++ b/res/xml/main_preferences.xml
@@ -23,6 +23,14 @@
 						a:summary="@string/c_calc_grouping_separator_summary"
 						a:entryValues="@array/p_grouping_separator_values"/>
 
+<!--
+		<ListPreference a:key="@string/p_calc_angle_units_key"
+						a:title="@string/c_calc_angle_units"
+						a:entries="@array/p_angle_units_names"
+						a:summary="@string/c_angle_units_summary"
+						a:entryValues="@array/p_angle_units"/>
+-->
+
 	</PreferenceCategory>
 
 
diff --git a/src/main/java/org/solovyev/android/calculator/CalculatorVarsActivity.java b/src/main/java/org/solovyev/android/calculator/CalculatorVarsActivity.java
index e5d0c8b4..09a500da 100644
--- a/src/main/java/org/solovyev/android/calculator/CalculatorVarsActivity.java
+++ b/src/main/java/org/solovyev/android/calculator/CalculatorVarsActivity.java
@@ -301,7 +301,7 @@ public class CalculatorVarsActivity extends ListActivity {
 
 		if (!StringUtils.isEmpty(name)) {
 			try {
-				Identifier.parser.parse(name, new MutableInt(0), 0, null);
+				Identifier.parser.parse(name, new MutableInt(0), null);
 				result = true;
 			} catch (ParseException e) {
 				// not valid name;