diff --git a/client.cpp b/client.cpp
index 4c3cc87229..0931f6cbec 100644
--- a/client.cpp
+++ b/client.cpp
@@ -1734,6 +1734,8 @@ void Client::setOnAllActivities(bool on)
     } else {
         setOnActivity(Activities::self()->current(), true);
     }
+#else
+    Q_UNUSED(on)
 #endif
 }
 
diff --git a/dbusinterface.cpp b/dbusinterface.cpp
index ae1c9bb407..3b210e1aab 100644
--- a/dbusinterface.cpp
+++ b/dbusinterface.cpp
@@ -120,6 +120,7 @@ bool DBusInterface::startActivity(const QString &in0)
 #ifdef KWIN_BUILD_ACTIVITIES
     return Activities::self()->start(in0);
 #else
+    Q_UNUSED(in0)
     return false;
 #endif
 }
@@ -129,6 +130,7 @@ bool DBusInterface::stopActivity(const QString &in0)
 #ifdef KWIN_BUILD_ACTIVITIES
     return Activities::self()->stop(in0);
 #else
+    Q_UNUSED(in0)
     return false;
 #endif
 }
diff --git a/netinfo.cpp b/netinfo.cpp
index 352c366404..e935fa2543 100644
--- a/netinfo.cpp
+++ b/netinfo.cpp
@@ -110,7 +110,7 @@ RootInfo *RootInfo::create()
         NET::WM2FullPlacement |
         NET::WM2FullscreenMonitors |
         NET::WM2KDEShadow;
-#if KWIN_BUILD_ACTIVITIES
+#ifdef KWIN_BUILD_ACTIVITIES
         properties2 |= NET::WM2Activities;
 #endif
     const NET::Actions actions = NET::ActionMove |
diff --git a/scripting/scripting_model.cpp b/scripting/scripting_model.cpp
index 60d32b7bb3..b4aeb89b8f 100644
--- a/scripting/scripting_model.cpp
+++ b/scripting/scripting_model.cpp
@@ -18,7 +18,10 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *********************************************************************/
 #include "scripting_model.h"
+#include <config-kwin.h>
+#ifdef KWIN_BUILD_ACTIVITIES
 #include "activities.h"
+#endif
 #include "client.h"
 #include "screens.h"
 #include "workspace.h"
@@ -496,6 +499,8 @@ void ForkLevel::activityAdded(const QString &activityId)
     childLevel->init();
     addChild(childLevel);
     emit endInsert();
+#else
+    Q_UNUSED(activityId)
 #endif
 }
 
@@ -513,6 +518,8 @@ void ForkLevel::activityRemoved(const QString &activityId)
             break;
         }
     }
+#else
+    Q_UNUSED(activityId)
 #endif
 }
 
diff --git a/useractions.cpp b/useractions.cpp
index ad7c511f03..7f7428b5bf 100644
--- a/useractions.cpp
+++ b/useractions.cpp
@@ -810,6 +810,8 @@ void UserActionsMenu::slotToggleOnActivity(QAction *action)
             }
         }
     }
+#else
+    Q_UNUSED(action)
 #endif
 }