import net.sourceforge.phpeclipse.PHPeclipsePlugin;
 import net.sourceforge.phpeclipse.phpeditor.util.PHPColorProvider;
 
+import org.eclipse.core.runtime.Platform;
 import org.eclipse.jface.action.Action;
 import org.eclipse.jface.preference.IPreferenceStore;
 import org.eclipse.jface.preference.PreferenceConverter;
                store.setDefault(PreferenceConstants.EDITOR_CTRL_ALT_SHIFT_HOVER,
                                PreferenceConstants.EDITOR_DEFAULT_HOVER_CONFIGURED_ID);
 
-               String ctrl = Action.findModifierString(SWT.CTRL);
+               int modifier = SWT.CTRL;
+               if (Platform.getOS().equals(Platform.OS_MACOSX))
+                       modifier = SWT.COMMAND;
+               String ctrl = Action.findModifierString(modifier);
                store
                                .setDefault(
                                                PreferenceConstants.EDITOR_TEXT_HOVER_MODIFIERS,
                store
                                .setDefault(
                                                PreferenceConstants.EDITOR_TEXT_HOVER_MODIFIER_MASKS,
-                                               "net.sourceforge.phpdt.ui.BestMatchHover;0;net.sourceforge.phpdt.ui.JavaSourceHover;" + SWT.CTRL); //$NON-NLS-1$
+                                               "net.sourceforge.phpdt.ui.BestMatchHover;0;net.sourceforge.phpdt.ui.JavaSourceHover;" + modifier); //$NON-NLS-1$
                store.setDefault(PreferenceConstants.EDITOR_SHOW_TEXT_HOVER_AFFORDANCE,
                                true);
 
                store
                                .setDefault(
                                                PreferenceConstants.EDITOR_BROWSER_LIKE_LINKS_KEY_MODIFIER_MASK,
-                                               SWT.CTRL);
+                                               modifier);
 
                // mark occurrences
                store.setDefault(PreferenceConstants.EDITOR_MARK_OCCURRENCES, true);