diff --git a/BloubWorld/Makefile b/BloubWorld/Makefile
index 5aedce3..fa4e664 100644
--- a/BloubWorld/Makefile
+++ b/BloubWorld/Makefile
@@ -37,9 +37,6 @@ bloubspace.o:	bloubspace.f90 Makefile
 povstuff.o:	povstuff.f90 Makefile
 	gfortran $(GFOPT) -c $<
 
-mathstuff.o:	mathstuff.f90 Makefile
-	gfortran $(GFOPT) -c $<
-
 # ------------------------------------------------------------
 
 genbloubs:	genbloubs.f90 Makefile $(OBJS)