diff --git a/src/Makefile b/src/Makefile
index 430c5ab..070021d 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -49,6 +49,14 @@ ifdef RELEASE
 CFLAGS := $(CFLAGS) -DBUILD_RELEASE
 endif
 
+ifdef DATADIR
+CFLAGS := $(CFLAGS) -DCONFIGURE_FHEROES2_DATA=\"$(DATADIR)\"
+endif
+
+ifdef LOCALEDIR
+CFLAGS := $(CFLAGS) -DCONFIGURE_FHEROES2_LOCALEDIR=\"$(LOCALEDIR)\"
+endif
+
 CFLAGS := $(SDL_FLAGS) $(CFLAGS)
 LIBS := $(SDL_LIBS) $(LIBS)