diff --git a/prec/Makefile b/prec/Makefile
index 38125ff7..16c26340 100644
--- a/prec/Makefile
+++ b/prec/Makefile
@@ -26,7 +26,8 @@ lib:  $(OBJS)
 	/bin/cp -p $(HERE)/$(LIBNAME) $(LIBDIR)
 	/bin/cp -p $(LIBMOD) $(LOCAL_MODS) $(LIBDIR)
 
-$(F90OBJS): $(MODOBJS)
+$(OBJS): $(LIBDIR)/psb_base_mod$(.mod)
+$(F90OBJS): psb_prec_mod$(.mod)
 psb_prec_mod.o: psb_prec_type.o
 
 veryclean: clean
diff --git a/prec/psb_zbjac_aply.f90 b/prec/psb_zbjac_aply.f90
index c6cb1dd5..83ff0697 100644
--- a/prec/psb_zbjac_aply.f90
+++ b/prec/psb_zbjac_aply.f90
@@ -113,7 +113,7 @@ subroutine psb_zbjac_aply(alpha,prec,x,beta,y,desc_data,trans,work,info)
            & trans=trans_,unit='U',choice=psb_none_, work=aux)
       if(info /=0) goto 9999
 
-    case('T','C')
+    case('T')
       call psb_spsm(zone,prec%av(u_pr_),x,zzero,ww,desc_data,info,&
            & trans=trans_,unit='L',diag=prec%d,choice=psb_none_, work=aux)
       if(info /=0) goto 9999
@@ -121,6 +121,14 @@ subroutine psb_zbjac_aply(alpha,prec,x,beta,y,desc_data,trans,work,info)
            & trans=trans_,unit='U',choice=psb_none_,work=aux)
       if(info /=0) goto 9999
 
+    case('C')
+      call psb_spsm(zone,prec%av(u_pr_),x,zzero,ww,desc_data,info,&
+           & trans=trans_,unit='L',diag=conjg(prec%d),choice=psb_none_, work=aux)
+      if(info /=0) goto 9999
+      call psb_spsm(alpha,prec%av(l_pr_),ww,beta,y,desc_data,info,&
+           & trans=trans_,unit='U',choice=psb_none_,work=aux)
+      if(info /=0) goto 9999
+
     end select