diff --git a/openair1/PHY/TOOLS/nr_phy_scope.c b/openair1/PHY/TOOLS/nr_phy_scope.c
index 3440e4f28c..833aba8474 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 );
@@ -801,6 +802,7 @@ 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 );