Improve readability of search engine in search tab

diff --git a/plugins/search/searchbar.ui b/plugins/search/searchbar.ui
index 7784264..cabd342 100644
--- a/plugins/search/searchbar.ui
+++ b/plugins/search/searchbar.ui
@@ -75,13 +75,27 @@
                 <cstring>textLabel1</cstring>
             </property>
             <property name="text">
-                <string>Search engine:</string>
+                <string>Engine:</string>
             </property>
         </widget>
         <widget class="KComboBox">
             <property name="name">
                 <cstring>m_search_engine</cstring>
             </property>
+            <property name="sizePolicy">
+                <sizepolicy>
+                    <hsizetype>0</hsizetype>
+                    <vsizetype>0</vsizetype>
+                    <horstretch>0</horstretch>
+                    <verstretch>0</verstretch>
+                </sizepolicy>
+            </property>
+            <property name="minimumSize">
+                <size>
+                    <width>150</width>
+                    <height>0</height>
+                </size>
+            </property>
         </widget>
     </hbox>
 </widget>