diff --git a/src/config.c b/src/config.c
index d5ee571..901e8b1 100644
--- a/src/config.c
+++ b/src/config.c
@@ -244,7 +244,9 @@ void add_entry(char *key, char *value)
     char *value1 = 0, *value2 = 0, *value3 = 0;
 
     /* Background and border */
-    if (strcmp(key, "rounded") == 0) {
+    if (strcmp(key, "scale_relative_to_dpi") == 0) {
+        ui_scale_dpi_ref = atof(value);
+    } else if (strcmp(key, "rounded") == 0) {
         // 'rounded' is the first parameter => alloc a new background
         if (backgrounds->len > 0) {
             Background *bg = &g_array_index(backgrounds, Background, backgrounds->len - 1);
diff --git a/src/panel.c b/src/panel.c
index a584ef9..63d6f3c 100644
--- a/src/panel.c
+++ b/src/panel.c
@@ -79,11 +79,14 @@ int num_panels;
 GArray *backgrounds;
 GArray *gradients;
 
+double ui_scale_dpi_ref;
+
 Imlib_Image default_icon;
 char *default_font = NULL;
 
 void default_panel()
 {
+    ui_scale_dpi_ref = 0;
     panels = NULL;
     num_panels = 0;
     default_icon = NULL;
diff --git a/src/panel.h b/src/panel.h
index 7fa0e13..11a468e 100644
--- a/src/panel.h
+++ b/src/panel.h
@@ -95,6 +95,7 @@ extern gboolean debug_fps;
 extern double tracing_fps_threshold;
 extern gboolean debug_frames;
 extern gboolean debug_thumbnails;
+extern double ui_scale_dpi_ref;
 
 typedef struct Panel {
     Area area;