diff --git a/KF5ConfigMacros.cmake b/KF5ConfigMacros.cmake
--- a/KF5ConfigMacros.cmake
+++ b/KF5ConfigMacros.cmake
@@ -116,7 +116,7 @@
                           COMMAND KF5::kconfig_compiler
                           ARGS ${_kcfg_FILE} ${_tmp_FILE} -d ${CMAKE_CURRENT_BINARY_DIR}/${_rel_PATH}
                           MAIN_DEPENDENCY ${_tmp_FILE}
-                          DEPENDS ${_kcfg_FILE})
+                          DEPENDS ${_kcfg_FILE} KF5::kconfig_compiler)
 
        set_source_files_properties(${_header_FILE} PROPERTIES SKIP_AUTOMOC ON)  # don't run automoc on this file
        set_source_files_properties(${_src_FILE} PROPERTIES SKIP_AUTOMOC ON)  # don't run automoc on this file