diff --git a/projectbuilders/makebuilder/makebuilderconfig.kcfg b/projectbuilders/makebuilder/makebuilderconfig.kcfg
--- a/projectbuilders/makebuilder/makebuilderconfig.kcfg
+++ b/projectbuilders/makebuilder/makebuilderconfig.kcfg
@@ -14,7 +14,7 @@
     <entry name="installAsRoot" key="Install As Root" type="Bool">
         <default>false</default>
     </entry>
-    <entry name="suCommand" key="Su Command" type="Int">
+    <entry name="suCommand" key="Su Command" type="String">
     </entry>
     <entry name="overrideNumberOfJobs" key="Override Number Of Jobs" type="Bool">
         <default>false</default>
diff --git a/projectbuilders/makebuilder/makeconfig.ui b/projectbuilders/makebuilder/makeconfig.ui
--- a/projectbuilders/makebuilder/makeconfig.ui
+++ b/projectbuilders/makebuilder/makeconfig.ui
@@ -11,12 +11,21 @@
    </rect>
   </property>
   <layout class="QFormLayout" name="formLayout">
-   <property name="margin">
-    <number>0</number>
-   </property>
    <property name="fieldGrowthPolicy">
     <enum>QFormLayout::AllNonFixedFieldsGrow</enum>
    </property>
+   <property name="leftMargin">
+    <number>0</number>
+   </property>
+   <property name="topMargin">
+    <number>0</number>
+   </property>
+   <property name="rightMargin">
+    <number>0</number>
+   </property>
+   <property name="bottomMargin">
+    <number>0</number>
+   </property>
    <item row="0" column="0">
     <widget class="QLabel" name="label_8">
      <property name="text">
@@ -95,6 +104,9 @@
      <property name="enabled">
       <bool>false</bool>
      </property>
+     <property name="editable">
+      <bool>true</bool>
+     </property>
      <item>
       <property name="text">
        <string>kdesu</string>
@@ -107,7 +119,7 @@
      </item>
      <item>
       <property name="text">
-       <string>sudo</string>
+       <string>gksu</string>
       </property>
      </item>
     </widget>
@@ -152,7 +164,7 @@
     </widget>
    </item>
    <item row="6" column="1">
-    <widget class="KUrlRequester" name="makeExecutable">
+    <widget class="KUrlRequester" name="makeExecutable" native="true">
      <property name="sizePolicy">
       <sizepolicy hsizetype="Preferred" vsizetype="Fixed">
        <horstretch>0</horstretch>
@@ -322,6 +334,22 @@
    </hints>
   </connection>
   <connection>
+   <sender>kcfg_installAsRoot</sender>
+   <signal>toggled(bool)</signal>
+   <receiver>kcfg_suCommand</receiver>
+   <slot>setEnabled(bool)</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>516</x>
+     <y>74</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>195</x>
+     <y>97</y>
+    </hint>
+   </hints>
+  </connection>
+  <connection>
    <sender>kcfg_overrideNumberOfJobs</sender>
    <signal>clicked(bool)</signal>
    <receiver>kcfg_numberOfJobs</receiver>
diff --git a/projectbuilders/makebuilder/makejob.cpp b/projectbuilders/makebuilder/makejob.cpp
--- a/projectbuilders/makebuilder/makejob.cpp
+++ b/projectbuilders/makebuilder/makejob.cpp
@@ -177,19 +177,48 @@
     bool runAsRoot = builderGroup.readEntry( "Install As Root", false );
     if ( runAsRoot && m_command == InstallCommand )
     {
-        int suCommand = builderGroup.readEntry( "Su Command", 0 );
-        QStringList arguments;
-        QString suCommandName;
-        switch( suCommand ) {
-            case 1:
-                return QStringList() << QStringLiteral("kdesudo") << QStringLiteral("-t");
-
-            case 2:
-                return QStringList() << QStringLiteral("sudo");
-
-            default:
-                return QStringList() << QStringLiteral("kdesu") << QStringLiteral("-t");
+        QString suCommand = builderGroup.readEntry( "Su Command", QString() );
+        bool suCommandIsDigit;
+        QStringList suCommandWithArg;
+        int suCommandNum = suCommand.toInt(&suCommandIsDigit);
+        /*
+         * "if(suCommandIsDigit)" block exists only because of backwards compatibility
+         * reasons, In earlier versions of KDevelop, suCommand's type was
+         * int, if a user upgrades to current version from an older version,
+         * suCommandIsDigit will become "true" and we will set suCommand according
+         * to the stored config entry.
+         */
+        if(suCommandIsDigit)
+        {
+            switch(suCommandNum)
+            {
+                case 1:
+                {
+                    suCommand = QStringLiteral("kdesudo");
+                    break;
+                }
+                case 2:
+                {
+                    suCommand = QStringLiteral("sudo");
+                    break;
+                }
+                default:
+                    suCommand = QStringLiteral("kdesu");
+            }
+
+            builderGroup.writeEntry("Su Command", suCommand);
+            //so that suCommandIsDigit becomes false next time
+            //project is opened.
         }
+
+        QRegExp regEx(" ");
+        suCommandWithArg = suCommand.split(regEx);
+        if( suCommandWithArg.isEmpty() )
+        {
+            suCommandWithArg << QStringLiteral("kdesu") << QStringLiteral("-t");
+        }
+
+        return suCommandWithArg;
     }
     return QStringList();
 }