diff --git a/3rdparty/kdsingleapplicationguard/kdsingleapplicationguard.cpp b/3rdparty/kdsingleapplicationguard/kdsingleapplicationguard.cpp
index cd8fadcce..8ddf7aad6 100644
--- a/3rdparty/kdsingleapplicationguard/kdsingleapplicationguard.cpp
+++ b/3rdparty/kdsingleapplicationguard/kdsingleapplicationguard.cpp
@@ -1119,7 +1119,7 @@ void KDSingleApplicationGuard::Private::poll() {
     }
 }
 
-#include "moc_kdsingleapplicationguard.cpp"
+// #include "moc_kdsingleapplicationguard.cpp"
 
 #ifdef KDTOOLSCORE_UNITTESTS
 
diff --git a/src/calamares/CMakeLists.txt b/src/calamares/CMakeLists.txt
index ff91904e2..5480dd1f8 100644
--- a/src/calamares/CMakeLists.txt
+++ b/src/calamares/CMakeLists.txt
@@ -11,15 +11,12 @@ set( calamaresSources
 )
 
 if( NOT WITH_KF5DBus )
-    set( kdsagSources "" )
-    foreach( _s
-        kdsingleapplicationguard/kdsingleapplicationguard.cpp
-        kdsingleapplicationguard/kdsharedmemorylocker.cpp
-        kdsingleapplicationguard/kdtoolsglobal.cpp
-        kdsingleapplicationguard/kdlockedsharedmemorypointer.cpp
+    set( kdsagSources
+        ${CMAKE_SOURCE_DIR}/3rdparty/kdsingleapplicationguard/kdsingleapplicationguard.cpp
+        ${CMAKE_SOURCE_DIR}/3rdparty/kdsingleapplicationguard/kdsharedmemorylocker.cpp
+        ${CMAKE_SOURCE_DIR}/3rdparty/kdsingleapplicationguard/kdtoolsglobal.cpp
+        ${CMAKE_SOURCE_DIR}/3rdparty/kdsingleapplicationguard/kdlockedsharedmemorypointer.cpp
     )
-        list( APPEND kdsagSources ${CMAKE_SOURCE_DIR}/3rdparty/${_s} )
-    endforeach()
     mark_thirdparty_code( ${kdsagSources} )
     list( APPEND calamaresSources ${kdsagSources} )
 endif()
@@ -46,6 +43,10 @@ calamares_automoc( calamares_bin )
 calamares_autouic( calamares_bin )
 calamares_autorcc( calamares_bin )
 
+if( kdsagSources )
+    set_source_files_properties( ${kdsagSources} PROPERTIES AUTOMOC OFF )
+endif()
+
 target_link_libraries( calamares_bin
     PRIVATE
         calamares