diff --git a/rviz_common/CMakeLists.txt b/rviz_common/CMakeLists.txt
index 6c3ec5e8d..754c9973b 100644
--- a/rviz_common/CMakeLists.txt
+++ b/rviz_common/CMakeLists.txt
@@ -35,8 +35,8 @@ if(MSVC)
   set(QT_VERSION_MAJOR 5)
   find_package(Qt${QT_VERSION_MAJOR} REQUIRED COMPONENTS Widgets)
   function(qt_wrap_cpp out)
-    qt5_wrap_cpp(_sources ${ARGN})
-    set("${out}" ${_sources} PARENT_SCOPE)
+    qt5_wrap_cpp("${out}" ${ARGN})
+    set("${out}" "${${out}}" PARENT_SCOPE)
   endfunction()
 else()
   find_package(QT NAMES Qt6 Qt5 REQUIRED COMPONENTS Widgets)
diff --git a/rviz_default_plugins/CMakeLists.txt b/rviz_default_plugins/CMakeLists.txt
index 2ed54257c..104f09979 100644
--- a/rviz_default_plugins/CMakeLists.txt
+++ b/rviz_default_plugins/CMakeLists.txt
@@ -61,8 +61,8 @@ if(MSVC)
   set(QT_VERSION_MAJOR 5)
   find_package(Qt${QT_VERSION_MAJOR} REQUIRED COMPONENTS Test Widgets)
   function(qt_wrap_cpp out)
-    qt5_wrap_cpp(_sources ${ARGN})
-    set("${out}" ${_sources} PARENT_SCOPE)
+    qt5_wrap_cpp("${out}" ${ARGN})
+    set("${out}" "${${out}}" PARENT_SCOPE)
   endfunction()
 else()
   find_package(QT NAMES Qt6 Qt5 REQUIRED COMPONENTS Test Widgets)
diff --git a/rviz_rendering/CMakeLists.txt b/rviz_rendering/CMakeLists.txt
index 2ebdb5ef4..0b5c0e8c0 100644
--- a/rviz_rendering/CMakeLists.txt
+++ b/rviz_rendering/CMakeLists.txt
@@ -37,8 +37,8 @@ if(MSVC)
   set(QT_VERSION_MAJOR 5)
   find_package(Qt${QT_VERSION_MAJOR} REQUIRED COMPONENTS Widgets)
   function(qt_wrap_cpp out)
-    qt5_wrap_cpp(_sources ${ARGN})
-    set("${out}" ${_sources} PARENT_SCOPE)
+    qt5_wrap_cpp("${out}" ${ARGN})
+    set("${out}" "${${out}}" PARENT_SCOPE)
   endfunction()
 else()
   find_package(QT NAMES Qt6 Qt5 REQUIRED COMPONENTS Widgets)
diff --git a/rviz_rendering_tests/CMakeLists.txt b/rviz_rendering_tests/CMakeLists.txt
index bf4f114cd..c815e668b 100644
--- a/rviz_rendering_tests/CMakeLists.txt
+++ b/rviz_rendering_tests/CMakeLists.txt
@@ -36,8 +36,8 @@ if(BUILD_TESTING)
     set(QT_VERSION_MAJOR 5)
     find_package(Qt${QT_VERSION_MAJOR} REQUIRED COMPONENTS Widgets)
     function(qt_wrap_cpp out)
-      qt5_wrap_cpp(_sources ${ARGN})
-      set("${out}" ${_sources} PARENT_SCOPE)
+      qt5_wrap_cpp("${out}" ${ARGN})
+      set("${out}" "${${out}}" PARENT_SCOPE)
     endfunction()
   else()
     find_package(QT NAMES Qt6 Qt5 REQUIRED COMPONENTS Widgets)