diff --git a/src_main_pub/semba_fdtd.F90 b/src_main_pub/semba_fdtd.F90
index c6bef3ee..405341c5 100755
--- a/src_main_pub/semba_fdtd.F90
+++ b/src_main_pub/semba_fdtd.F90
@@ -81,7 +81,9 @@ PROGRAM SEMBA_FDTD_launcher
    !*************************************************
    !
 !!!   
-   use mtln_solver_mod, mtln_solver_t => mtln_t
+#ifdef CompileWithWires_mtln 
+   use mtln_solver_mod, mtln_solver_t => mtln_t 
+#endif            
 !!!   
    use interpreta_switches_m
    IMPLICIT NONE
@@ -864,8 +866,11 @@ PROGRAM SEMBA_FDTD_launcher
            l%opcionestotales,l%sgbcfreq,l%sgbcresol,l%sgbccrank,l%sgbcdepth,l%fatalerror,l%fieldtotl,l%permitscaling, &
            l%EpsMuTimeScale_input_parameters, &
            l%stochastic,l%mpidir,l%verbose,l%precision,l%hopf,l%ficherohopf,l%niapapostprocess,l%planewavecorr, &
-           l%dontwritevtk,l%experimentalVideal,l%forceresampled,l%factorradius,l%factordelta,l%noconformalmapvtk, &
-           mtln_solver)
+           l%dontwritevtk,l%experimentalVideal,l%forceresampled,l%factorradius,l%factordelta,l%noconformalmapvtk &
+   ,mtln_solver &  
+#ifdef CompileWithWires_mtln  
+       )
+#endif         
 
          deallocate (sggMiEx, sggMiEy, sggMiEz,sggMiHx, sggMiHy, sggMiHz,sggMiNo,sggMtag)
       else
@@ -1314,7 +1319,9 @@ subroutine NFDE2sgg
          l%groundwires,l%attfactorc,l%mibc,l%sgbc,l%sgbcDispersive,l%MEDIOEXTRA,maxSourceValue,l%skindepthpre,l%createmapvtk,l%input_conformal_flag,l%CLIPREGION,l%boundwireradius,l%maxwireradius,l%updateshared,l%run_with_dmma, &
          eps0,mu0,.false.,l%hay_slanted_wires,l%verbose,l%ignoresamplingerrors,tagtype,l%wiresflavor)
 !!!!mtln constructor 100424  !!!solo si es json, si no no existe parser!!     
-         if (trim(adjustl(l%extension))=='.json')  mtln_solver = mtlnCtor(parser%mtln)
+#ifdef CompileWithWires_mtln  
+         if (trim(adjustl(l%extension))=='.json')  mtln_solver = mtlnCtor(parser%mtln)   
+#endif          
 !!!!         
          WRITE (dubuf,*) '[OK] ENDED NFDE --------> GEOM'
          CALL print11 (l%layoutnumber, dubuf)
diff --git a/src_main_pub/timestepping.F90 b/src_main_pub/timestepping.F90
index 48d62a27..f3d7e24a 100755
--- a/src_main_pub/timestepping.F90
+++ b/src_main_pub/timestepping.F90
@@ -154,7 +154,7 @@ subroutine launch_simulation(sgg,sggMtag,sggMiNo,sggMiEx,sggMiEy,sggMiEz,sggMiHx
  
 #ifdef CompileWithWires_mtln   
    type (mtln_solver_t) :: mtln_solver
-#ifdef CompileWithWires_mtln    
+#endif   
 !!!
       logical :: noconformalmapvtk
       logical :: hopf,experimentalVideal,forceresampled