diff --git a/src/IFOS2D.c b/src/IFOS2D.c
index de8933a8d44e4f910b519633b9a1b2150fd17c0f..f10cbf706a3aac87e1564d58c0635d086a256289 100644
--- a/src/IFOS2D.c
+++ b/src/IFOS2D.c
@@ -3275,7 +3275,7 @@ int main(int argc, char **argv){
                         /*------------------------------------------------------------------------------*/
                         /*time domain filtering of the source signal */
                         if(WAVETYPE==1||WAVETYPE==3){
-                            if(((TIME_FILT==1) || (TIME_FILT==2)) && (INV_STF==0)){
+                            if(((TIME_FILT==1) || (TIME_FILT==2))){
                                 timedomain_filt(signals,FC,ORDER,nsrc_loc,ns,1);
                             }
                             
@@ -3283,7 +3283,7 @@ int main(int argc, char **argv){
                         
                         /*time domain filtering of the source signal */
                         if(WAVETYPE==2||WAVETYPE==3){
-                            if(((TIME_FILT==1) || (TIME_FILT==2)) && (INV_STF==0)){
+                            if(((TIME_FILT==1) || (TIME_FILT==2))){
                                 timedomain_filt(signals_SH,FC,ORDER,nsrc_loc,ns,1);
                             }