diff --git a/Modules/DeployQt4.cmake b/Modules/DeployQt4.cmake
index 4bf1b6c4b..53503011d 100644
--- a/Modules/DeployQt4.cmake
+++ b/Modules/DeployQt4.cmake
@@ -250,7 +250,11 @@ function(install_qt4_executable executable)
         endif()
 
         get_filename_component(executable_absolute "${executable}" ABSOLUTE)
-        gp_file_type("${executable_absolute}" "${QT_QTCORE_LIBRARY}" qtcore_type)
+        if(EXISTS "${QT_QTCORE_LIBRARY_RELEASE}")
+            gp_file_type("${executable_absolute}" "${QT_QTCORE_LIBRARY_RELEASE}" qtcore_type)
+        elseif(EXISTS "${QT_QTCORE_LIBRARY_DEBUG}")
+            gp_file_type("${executable_absolute}" "${QT_QTCORE_LIBRARY_DEBUG}" qtcore_type)
+        endif()
         if(qtcore_type STREQUAL "system")
                 set(qt_plugins_dir "")
         endif()