diff --git a/BloubWorld/Makefile b/BloubWorld/Makefile
index ac8904a..54ced8c 100644
--- a/BloubWorld/Makefile
+++ b/BloubWorld/Makefile
@@ -6,8 +6,9 @@ all:	genbloubs movebloubs exportbloubs mergebloubs	\
 
 # ------------------------------------------------------------
 
-GFOPT = -Wall -Wextra -g -time
+GFOPT = -Wall -Wextra -g -time  -I../Modules
 OBJS  = bloubspace.o povstuff.o mathstuff.o
+MYLIB = '../Modules/libtth90modules.a'
 
 # ------------------------------------------------------------
 
@@ -42,7 +43,7 @@ mathstuff.o:	mathstuff.f90 Makefile
 # ------------------------------------------------------------
 
 genbloubs:	genbloubs.f90 Makefile $(OBJS)
-	gfortran $(GFOPT) $< $(OBJS)  -o $@
+	gfortran $(GFOPT) $< $(OBJS) $(MYLIB) -o $@
 
 movebloubs:	movebloubs.f90 Makefile $(OBJS)
 	gfortran $(GFOPT) $< $(OBJS)  -o $@
diff --git a/BloubWorld/genbloubs.f90 b/BloubWorld/genbloubs.f90
index 2baa7aa..47da64e 100644
--- a/BloubWorld/genbloubs.f90
+++ b/BloubWorld/genbloubs.f90
@@ -1,7 +1,7 @@
 program genbloubs
 
   use bloubspace
-  use mathstuff
+  use mathstuff2
 
   integer               :: nbbloubs
   integer               :: i