diff --git a/healthd/healthd_mode_charger.cpp b/healthd/healthd_mode_charger.cpp
index 9ed5944..78f8403 100644
--- a/healthd/healthd_mode_charger.cpp
+++ b/healthd/healthd_mode_charger.cpp
@@ -88,7 +88,7 @@
     int min_capacity;
     bool level_only;
 
-    gr_surface surface;
+    GRSurface* surface;
 };
 
 struct animation {
@@ -115,7 +115,7 @@
     struct key_state keys[KEY_MAX + 1];
 
     struct animation *batt_anim;
-    gr_surface surf_unknown;
+    GRSurface* surf_unknown;
 };
 
 static struct frame batt_anim_frames[] = {
@@ -273,7 +273,7 @@
 }
 
 /* returns the last y-offset of where the surface ends */
-static int draw_surface_centered(struct charger* /*charger*/, gr_surface surface)
+static int draw_surface_centered(struct charger* /*charger*/, GRSurface* surface)
 {
     int w;
     int h;
@@ -681,7 +681,7 @@
 
     charger->batt_anim = &battery_animation;
 
-    gr_surface* scale_frames;
+    GRSurface** scale_frames;
     int scale_count;
     ret = res_create_multi_display_surface("charger/battery_scale", &scale_count, &scale_frames);
     if (ret < 0) {