diff --git a/src/gtk-sat-map.c b/src/gtk-sat-map.c
index 635c8c24..64d0f8e3 100644
--- a/src/gtk-sat-map.c
+++ b/src/gtk-sat-map.c
@@ -106,10 +106,6 @@ static sat_map_obj_t *find_sat_at_pos(GtkSatMap * satmap, gfloat mx, gfloat my);
 
 static GtkBoxClass *parent_class = NULL;
 
-/* Temporary arrays for footprint calculation */
-static gdouble *temp_points1 = NULL;
-static gdouble *temp_points2 = NULL;
-
 /** Convert rgba color to cairo-friendly format */
 static void rgba_to_cairo(guint32 rgba, gdouble * r, gdouble * g,
                           gdouble * b, gdouble * a)
@@ -256,10 +252,10 @@ static void gtk_sat_map_destroy(GtkWidget * widget)
         satmap->terminator_count = 0;
 
         /* free temporary point arrays */
-        g_free(temp_points1);
-        temp_points1 = NULL;
-        g_free(temp_points2);
-        temp_points2 = NULL;
+        g_free(satmap->temp_points1);
+        satmap->temp_points1 = NULL;
+        g_free(satmap->temp_points2);
+        satmap->temp_points2 = NULL;
     }
     (*GTK_WIDGET_CLASS(parent_class)->destroy) (widget);
 }
@@ -394,8 +390,8 @@ GtkWidget      *gtk_sat_map_new(GKeyFile * cfgdata, GHashTable * sats,
     satmap->y0 = 0;
 
     /* Allocate temporary point arrays for footprint calculation */
-    temp_points1 = g_new0(gdouble, 720);
-    temp_points2 = g_new0(gdouble, 720);
+    satmap->temp_points1 = g_new0(gdouble, 720);
+    satmap->temp_points2 = g_new0(gdouble, 720);
 
     /* Connect signals */
     gtk_widget_add_events(satmap->canvas, GDK_POINTER_MOTION_MASK |
@@ -1426,16 +1422,16 @@ static guint calculate_footprint(GtkSatMap * satmap, sat_t * sat,
         lonlat_to_xy(satmap, rangelon, rangelat, &sx, &sy);
         lonlat_to_xy(satmap, mlon, rangelat, &msx, &msy);
 
-        temp_points1[2 * azi] = sx;
-        temp_points1[2 * azi + 1] = sy;
+        satmap->temp_points1[2 * azi] = sx;
+        satmap->temp_points1[2 * azi + 1] = sy;
 
-        temp_points1[718 - 2 * azi] = msx;
-        temp_points1[719 - 2 * azi] = msy;
+        satmap->temp_points1[718 - 2 * azi] = msx;
+        satmap->temp_points1[719 - 2 * azi] = msy;
     }
 
     if (pole_is_covered(sat))
     {
-        sort_points_x(satmap, sat, temp_points1, 360);
+        sort_points_x(satmap, sat, satmap->temp_points1, 360);
         numrc = 1;
         n1 = 360;
         n2 = 0;
@@ -1445,7 +1441,8 @@ static guint calculate_footprint(GtkSatMap * satmap, sat_t * sat,
         lonlat_to_xy(satmap, sat->ssplon, sat->ssplat, &ssx, &ssy);
         n1 = 360;
         n2 = 360;
-        split_points(satmap, sat, ssx, temp_points1, &n1, temp_points2, &n2);
+        split_points(satmap, sat, ssx, satmap->temp_points1, &n1,
+                     satmap->temp_points2, &n2);
         numrc = 2;
     }
     else
@@ -1457,14 +1454,14 @@ static guint calculate_footprint(GtkSatMap * satmap, sat_t * sat,
 
     g_free(obj->range1_points);
     obj->range1_points = g_new(gdouble, n1 * 2);
-    memcpy(obj->range1_points, temp_points1, n1 * 2 * sizeof(gdouble));
+    memcpy(obj->range1_points, satmap->temp_points1, n1 * 2 * sizeof(gdouble));
     obj->range1_count = n1;
 
     if (numrc == 2 && n2 > 0)
     {
         g_free(obj->range2_points);
         obj->range2_points = g_new(gdouble, n2 * 2);
-        memcpy(obj->range2_points, temp_points2, n2 * 2 * sizeof(gdouble));
+        memcpy(obj->range2_points, satmap->temp_points2, n2 * 2 * sizeof(gdouble));
         obj->range2_count = n2;
     }
     else
diff --git a/src/gtk-sat-map.h b/src/gtk-sat-map.h
index c19ec557..2dede14c 100644
--- a/src/gtk-sat-map.h
+++ b/src/gtk-sat-map.h
@@ -99,6 +99,10 @@ typedef struct {
     gint            terminator_count;   /*!< Number of terminator points. */
     gdouble         terminator_last_tstamp;     /*!< Timestamp of the last terminator drawn. */
 
+    /* Temporary arrays for footprint calculation */
+    gdouble        *temp_points1;
+    gdouble        *temp_points2;
+
     gdouble         naos;       /*!< Next event time. */
     gint            ncat;       /*!< Next event catnum. */