diff --git a/Makefile.moddir_rules b/Makefile.moddir_rules
index 988f484d4d..4343599a4f 100644
--- a/Makefile.moddir_rules
+++ b/Makefile.moddir_rules
@@ -66,7 +66,7 @@ _all: $(LOADABLE_MODS:%=%.so)
 ifneq ($(findstring $(OSARCH), mingw32 cygwin ),)
   # linker options and extra libraries for cygwin
   SOLINK=-Wl,--out-implib=lib$@.a -shared
-  LIBS+=-L../main -lasterisk -L../res $($@_LIBS)
+  LIBS+=-L$(ASTTOPDIR)/main -lasterisk -L$(ASTTOPDIR)/res $($@_LIBS)
   # additional libraries in res/
 endif
 endif