diff --git a/kcmkwin/kwinrules/ruleswidget.cpp b/kcmkwin/kwinrules/ruleswidget.cpp
index 04ff275277..70d363867f 100644
--- a/kcmkwin/kwinrules/ruleswidget.cpp
+++ b/kcmkwin/kwinrules/ruleswidget.cpp
@@ -27,7 +27,10 @@
 #include <kwindowsystem.h>
 #include <KDE/KLocalizedString>
 #include <QRegExp>
+
+#ifdef KWIN_BUILD_ACTIVITIES
 #include <KActivities/Consumer>
+#endif
 
 #include <assert.h>
 #include <kmessagebox.h>
@@ -86,7 +89,9 @@ RulesWidget::RulesWidget(QWidget* parent)
     SETUP(size, set);
     SETUP(desktop, set);
     SETUP(screen, set);
+#ifdef KWIN_BUILD_ACTIVITIES
     SETUP(activity, set);
+#endif
     SETUP(maximizehoriz, set);
     SETUP(maximizevert, set);
     SETUP(minimize, set);
@@ -126,6 +131,11 @@ RulesWidget::RulesWidget(QWidget* parent)
     edit_reg_title->hide();
     edit_reg_machine->hide();
 
+#ifndef KWIN_BUILD_ACTIVITIES
+    rule_activity->hide();
+    enable_activity->hide();
+    activity->hide();
+#endif
     int i;
     for (i = 1;
             i <= KWindowSystem::numberOfDesktops();
@@ -133,6 +143,7 @@ RulesWidget::RulesWidget(QWidget* parent)
         desktop->addItem(QString::number(i).rightJustified(2) + ':' + KWindowSystem::desktopName(i));
     desktop->addItem(i18n("All Desktops"));
 
+#ifdef KWIN_BUILD_ACTIVITIES
     static KActivities::Consumer activities;
     foreach (const QString & activityId, activities.listActivities()) {
         activity->addItem(KActivities::Info::name(activityId), activityId);
@@ -141,6 +152,7 @@ RulesWidget::RulesWidget(QWidget* parent)
     #define NULL_UUID "00000000-0000-0000-0000-000000000000"
     activity->addItem(i18n("All Activities"), QString::fromLatin1(NULL_UUID));
     #undef NULL_UUID
+#endif
 }
 
 #undef SETUP
@@ -157,7 +169,9 @@ UPDATE_ENABLE_SLOT(position)
 UPDATE_ENABLE_SLOT(size)
 UPDATE_ENABLE_SLOT(desktop)
 UPDATE_ENABLE_SLOT(screen)
+#ifdef KWIN_BUILD_ACTIVITIES
 UPDATE_ENABLE_SLOT(activity)
+#endif
 UPDATE_ENABLE_SLOT(maximizehoriz)
 UPDATE_ENABLE_SLOT(maximizevert)
 UPDATE_ENABLE_SLOT(minimize)
@@ -275,7 +289,7 @@ int RulesWidget::comboToDesktop(int val) const
         return NET::OnAllDesktops;
     return val + 1;
 }
-
+#ifdef KWIN_BUILD_ACTIVITIES
 int RulesWidget::activityToCombo(QString d) const
 {
     // TODO: ivan - do a multiselection list
@@ -296,7 +310,7 @@ QString RulesWidget::comboToActivity(int val) const
 
     return activity->itemData(val).toString();
 }
-
+#endif
 static int placementToCombo(Placement::Policy placement)
 {
     static const int conv[] = {
@@ -431,7 +445,9 @@ void RulesWidget::setRules(Rules* rules)
     LINEEDIT_SET_RULE(size, sizeToStr);
     COMBOBOX_SET_RULE(desktop, desktopToCombo);
     SPINBOX_SET_RULE(screen, inc);
+#ifdef KWIN_BUILD_ACTIVITIES
     COMBOBOX_SET_RULE(activity, activityToCombo);
+#endif
     CHECKBOX_SET_RULE(maximizehoriz,);
     CHECKBOX_SET_RULE(maximizevert,);
     CHECKBOX_SET_RULE(minimize,);
@@ -528,7 +544,9 @@ Rules* RulesWidget::rules() const
     LINEEDIT_SET_RULE(size, strToSize);
     COMBOBOX_SET_RULE(desktop, comboToDesktop);
     SPINBOX_SET_RULE(screen, dec);
+#ifdef KWIN_BUILD_ACTIVITIES
     COMBOBOX_SET_RULE(activity, comboToActivity);
+#endif
     CHECKBOX_SET_RULE(maximizehoriz,);
     CHECKBOX_SET_RULE(maximizevert,);
     CHECKBOX_SET_RULE(minimize,);
diff --git a/kcmkwin/kwinrules/ruleswidget.h b/kcmkwin/kwinrules/ruleswidget.h
index 4392ac93e1..7e875601db 100644
--- a/kcmkwin/kwinrules/ruleswidget.h
+++ b/kcmkwin/kwinrules/ruleswidget.h
@@ -20,6 +20,8 @@
 #ifndef __RULESWIDGET_H__
 #define __RULESWIDGET_H__
 
+#include <config-kwin.h>
+
 #include <kdialog.h>
 #include <kwindowsystem.h>
 #include <kkeysequencewidget.h>
@@ -58,7 +60,9 @@ private slots:
     void updateEnablesize();
     void updateEnabledesktop();
     void updateEnablescreen();
+#ifdef KWIN_BUILD_ACTIVITIES
     void updateEnableactivity();
+#endif
     void updateEnablemaximizehoriz();
     void updateEnablemaximizevert();
     void updateEnableminimize();
@@ -94,8 +98,10 @@ private slots:
 private:
     int desktopToCombo(int d) const;
     int comboToDesktop(int val) const;
+#ifdef KWIN_BUILD_ACTIVITIES
     int activityToCombo(QString d) const;
     QString comboToActivity(int val) const;
+#endif
     int comboToTiling(int val) const;
     int inc(int i) const { return i+1; }
     int dec(int i) const { return i-1; }