diff --git a/cmake/QtPostProcess.cmake b/cmake/QtPostProcess.cmake
index 5e563d4c915..48de9ef3964 100644
--- a/cmake/QtPostProcess.cmake
+++ b/cmake/QtPostProcess.cmake
@@ -9,7 +9,7 @@ function(qt_internal_write_depends_file target)
     endforeach()
     string(APPEND contents "#endif\n")
 
-    file(GENERATE OUTPUT ${outfile} CONTENT ${contents})
+    file(GENERATE OUTPUT "${outfile}" CONTENT "${contents}")
 endfunction()
 
 function(qt_internal_create_depends_files)
@@ -17,11 +17,24 @@ function(qt_internal_create_depends_files)
     foreach (target ${KNOWN_QT_MODULES})
         get_target_property(depends "${target}" LINK_LIBRARIES)
         foreach (dep ${depends})
+            # Normalize module by stripping leading "Qt::" and trailing "Private"
+            if (dep MATCHES "Qt::(.*)")
+                set(dep "${CMAKE_MATCH_1}")
+            endif()
+            if (dep MATCHES "(.*)Private")
+                set(dep "${CMAKE_MATCH_1}")
+            endif()
+
             list(FIND KNOWN_QT_MODULES "${dep}" _pos)
             if (_pos GREATER -1)
                 list(APPEND qtdeps "${dep}")
             endif()
         endforeach()
+
+        if (DEFINED qtdeps)
+            list(REMOVE_DUPLICATES qtdeps)
+        endif()
+
         get_target_property(hasModuleHeaders "${target}" MODULE_HAS_HEADERS)
         if (${hasModuleHeaders})
             qt_internal_write_depends_file("${target}" ${qtdeps})