diff --git a/common/utils/telnetsrv/telnetsrv.c b/common/utils/telnetsrv/telnetsrv.c
index 9e4eeca205..aab8c84368 100644
--- a/common/utils/telnetsrv/telnetsrv.c
+++ b/common/utils/telnetsrv/telnetsrv.c
@@ -51,7 +51,6 @@
 #include <dlfcn.h>
 #include <sys/time.h>
 #include <sys/resource.h>
-#include <form.h>
 #include "common/utils/load_module_shlib.h"
 #include "common/config/config_userapi.h"
 #include "common/utils/threadPool/thread-pool.h"
diff --git a/openair1/PHY/TOOLS/nr_phy_scope.c b/openair1/PHY/TOOLS/nr_phy_scope.c
index 3440e4f28c..303ec5121d 100644
--- a/openair1/PHY/TOOLS/nr_phy_scope.c
+++ b/openair1/PHY/TOOLS/nr_phy_scope.c
@@ -449,6 +449,7 @@ static OAI_phy_scope_t *create_phy_scope_gnb(void) {
   OAI_phy_scope_t *fdui = calloc(( sizeof *fdui ),1);
   // Define form
   fdui->phy_scope = fl_bgn_form( FL_NO_BOX, 800, 800 );
+  fl_set_form_dblbuffer(fdui->phy_scope, 1);
   // This the whole UI box
   obj = fl_add_box( FL_BORDER_BOX, 0, 0, 800, 800, "" );
   fl_set_object_color( obj, FL_BLACK, FL_WHITE );
@@ -530,7 +531,10 @@ static void *scope_thread_gNB(void *arg) {
   OAI_phy_scope_t  *form_gnb = create_phy_scope_gnb();
 
   while (!oai_exit) {
+    fl_freeze_form(form_gnb->phy_scope);
     phy_scope_gNB(form_gnb, p, nb_ue);
+    fl_unfreeze_form(form_gnb->phy_scope);
+    fl_redraw_form(form_gnb->phy_scope);
     usleep(99*1000);
   }
 
@@ -801,6 +805,7 @@ static OAI_phy_scope_t *create_phy_scope_nrue( int ID ) {
   OAI_phy_scope_t *fdui = calloc(( sizeof *fdui ),1);
   // Define form
   fdui->phy_scope = fl_bgn_form( FL_NO_BOX, 800, 900 );
+  fl_set_form_dblbuffer(fdui->phy_scope, 1);
   // This the whole UI box
   obj = fl_add_box( FL_BORDER_BOX, 0, 0, 800, 900, "" );
   fl_set_object_color( obj, FL_BLACK, FL_BLACK );