diff --git a/local/recipes/kde/kf6-kcrash/source/CMakeLists.txt b/local/recipes/kde/kf6-kcrash/source/CMakeLists.txt
index 75172b7157..7f64452550 100644
--- a/local/recipes/kde/kf6-kcrash/source/CMakeLists.txt
+++ b/local/recipes/kde/kf6-kcrash/source/CMakeLists.txt
@@ -34,7 +34,7 @@ if(WITH_X11)
     find_package(X11 REQUIRED)
     set(HAVE_X11 TRUE)
 endif()
-find_package(Qt6Test ${REQUIRED_QT_VERSION} CONFIG REQUIRED)
+find_package(Qt6Test ${REQUIRED_QT_VERSION} CONFIG)
 include(ECMGenerateExportHeader)
 include(ECMSetupVersion)
 include(ECMGenerateHeaders)
diff --git a/local/recipes/kde/kf6-kcrash/source/src/kcrash.cpp b/local/recipes/kde/kf6-kcrash/source/src/kcrash.cpp
index bcd69791f7..85a9f70c6b 100644
--- a/local/recipes/kde/kf6-kcrash/source/src/kcrash.cpp
+++ b/local/recipes/kde/kf6-kcrash/source/src/kcrash.cpp
@@ -24,6 +24,7 @@
 #include <qplatformdefs.h>
 #ifndef Q_OS_WIN
 #include <cerrno>
+#include <grp.h> // setgroups() — on glibc it comes via <unistd.h>+_GNU_SOURCE; relibc declares it in <grp.h>
 #include <sys/resource.h>
 #include <sys/un.h>
 #else
diff --git a/local/recipes/kde/plasma-desktop/source/CMakeLists.txt b/local/recipes/kde/plasma-desktop/source/CMakeLists.txt
index 23598b0ee6..fa3b35829d 100644
--- a/local/recipes/kde/plasma-desktop/source/CMakeLists.txt
+++ b/local/recipes/kde/plasma-desktop/source/CMakeLists.txt
@@ -96,7 +96,7 @@ find_package(PlasmaActivities ${PROJECT_DEP_VERSION} REQUIRED)
 find_package(PlasmaActivitiesStats ${PROJECT_DEP_VERSION} REQUIRED)
 
 if(BUILD_TESTING)
-    find_package(Qt6Test ${QT_MIN_VERSION} CONFIG REQUIRED)
+    find_package(Qt6Test ${QT_MIN_VERSION} CONFIG)
     include(ECMAddTests)
 endif()