diff --git a/makefile b/makefile
index 5ab3991..2db71ba 100644
--- a/makefile
+++ b/makefile
@@ -35,7 +35,7 @@ libsMulti:
 $(LIBDIR)/libProblem%.dll: Source/Problem%.cpp
 	$(CXX) $(LIBFLAGS) -o $@ $< $(LINKEDLIBS)
 $(LIBDIR)/libProblem67.dll: Source/Problem67.cpp
-	$(CXX) $(LIBFLAGS) -o $@ $< $(LINKEDLIBS) -lProblem18
+	$(CXX) $(LIBFLAGS) -o $@ $< $(LINKEDLIBS) -L $(LIBDIR) -lProblem18
 libsWindowsMulti:
 	$(MAKE) libsWindows -j $(NUMCORESWIN)