diff --git a/cmake/QtDocsHelpers.cmake b/cmake/QtDocsHelpers.cmake
index e65448846c4..832723b1bdf 100644
--- a/cmake/QtDocsHelpers.cmake
+++ b/cmake/QtDocsHelpers.cmake
@@ -17,15 +17,15 @@ function(qt_add_docs)
     endif()
 
     if (NOT QT_SUPERBUILD OR QT_WILL_INSTALL)
-        set(qdoc_bin "${QT_BUILD_INTERNALS_RELOCATABLE_INSTALL_PREFIX}/${INSTALL_BINDIR}/qdoc")
-        set(qtattributionsscanner_bin "${QT_BUILD_INTERNALS_RELOCATABLE_INSTALL_PREFIX}/${INSTALL_BINDIR}/qtattributionsscanner")
-        set(qhelpgenerator_bin "${QT_BUILD_INTERNALS_RELOCATABLE_INSTALL_PREFIX}/${INSTALL_BINDIR}/qhelpgenerator")
+        set(doc_tools_dir "${QT_BUILD_INTERNALS_RELOCATABLE_INSTALL_PREFIX}/${INSTALL_BINDIR}")
     else()
-        set(qdoc_bin "${QT_BUILD_INTERNALS_RELOCATABLE_INSTALL_PREFIX}/qtbase/${INSTALL_BINDIR}/qdoc")
-        set(qtattributionsscanner_bin "${QT_BUILD_INTERNALS_RELOCATABLE_INSTALL_PREFIX}/qtbase/${INSTALL_BINDIR}/qtattributionsscanner")
-        set(qhelpgenerator_bin "${QT_BUILD_INTERNALS_RELOCATABLE_INSTALL_PREFIX}/qtbase/${INSTALL_BINDIR}/qhelpgenerator")
+        set(doc_tools_dir "${QT_BUILD_INTERNALS_RELOCATABLE_INSTALL_PREFIX}/qtbase/${INSTALL_BINDIR}")
     endif()
 
+    set(qdoc_bin "${doc_tools_dir}/qdoc${CMAKE_EXECUTABLE_SUFFIX}")
+    set(qtattributionsscanner_bin "${doc_tools_dir}/qtattributionsscanner${CMAKE_EXECUTABLE_SUFFIX}")
+    set(qhelpgenerator_bin "${doc_tools_dir}/qhelpgenerator${CMAKE_EXECUTABLE_SUFFIX}")
+
     get_target_property(target_type ${target} TYPE)
     if (NOT target_type STREQUAL "INTERFACE_LIBRARY")
         get_target_property(target_bin_dir ${target} BINARY_DIR)