diff --git a/qelectrotech.pro b/qelectrotech.pro
index fb2fedbec..35e7408bd 100644
--- a/qelectrotech.pro
+++ b/qelectrotech.pro
@@ -171,7 +171,9 @@ HEADERS += $$files(sources/*.h) \
            $$files(sources/xml/*.h) \
            $$files(sources/dxf/*.h) \
            $$files(sources/qet_elementscaler/*.h) \
-           $$files(sources/svg/*.h)
+           $$files(sources/svg/*.h) \
+           $$files(sources/import/edz/*.h) \
+           $$files(sources/import/edz/lzma/*.h)
 
 SOURCES += $$files(sources/*.cpp) \
            $$files(sources/editor/*.cpp) \
@@ -215,11 +217,17 @@ SOURCES += $$files(sources/*.cpp) \
            $$files(sources/xml/*.cpp) \
            $$files(sources/dxf/*.cpp) \
            $$files(sources/qet_elementscaler/*.cpp) \
-           $$files(sources/svg/*.cpp)
+           $$files(sources/svg/*.cpp) \
+           $$files(sources/import/edz/*.cpp) \
+           $$files(sources/import/edz/lzma/*.c)
 
 # Needed for use promote QTreeWidget in terminalstripeditor.ui
 INCLUDEPATH += sources/TerminalStrip/ui
 
+# Needed for the EPLAN .edz importer (PR #513) and its bundled lzma/7z sources
+INCLUDEPATH += sources/import/edz
+INCLUDEPATH += sources/import/edz/lzma
+
 # Liste des fichiers qui seront incorpores au binaire en tant que ressources Qt
 RESOURCES += qelectrotech.qrc