diff --git a/sdm/include/utils/rect.h b/sdm/include/utils/rect.h
index 91d70c20..c1986456 100644
--- a/sdm/include/utils/rect.h
+++ b/sdm/include/utils/rect.h
@@ -42,7 +42,6 @@ namespace sdm {
   void Log(DebugTag debug_tag, const char *prefix, const LayerRect &roi);
   void Normalize(const uint32_t &align_x, const uint32_t &align_y, LayerRect *rect);
   LayerRect Union(const LayerRect &rect1, const LayerRect &rect2);
-  LayerRect Union(const LayerRectArray &rects);
   LayerRect Intersection(const LayerRect &rect1, const LayerRect &rect2);
   LayerRect Subtract(const LayerRect &rect1, const LayerRect &rect2);
   LayerRect Reposition(const LayerRect &rect1, const int &x_offset, const int &y_offset);
diff --git a/sdm/libs/utils/rect.cpp b/sdm/libs/utils/rect.cpp
index e120287e..e756464e 100644
--- a/sdm/libs/utils/rect.cpp
+++ b/sdm/libs/utils/rect.cpp
@@ -138,16 +138,6 @@ LayerRect Union(const LayerRect &rect1, const LayerRect &rect2) {
   return res;
 }
 
-LayerRect Union(const LayerRectArray &rects) {
-  LayerRect res;
-
-  for (uint32_t i = 0; i < rects.count; i++) {
-    res = Union(rects.rect[i], res);
-  }
-
-  return res;
-}
-
 void SplitLeftRight(const LayerRect &in_rect, uint32_t split_count, uint32_t align_x,
                     bool flip_horizontal, LayerRect *out_rects) {
   LayerRect rect_temp = in_rect;