diff --git a/libs/main/containers/pivector2d.h b/libs/main/containers/pivector2d.h
index 8946a6cc..b55adbe5 100644
--- a/libs/main/containers/pivector2d.h
+++ b/libs/main/containers/pivector2d.h
@@ -160,6 +160,7 @@ public:
 
 	inline T & element(size_t row, size_t col) {return mat[row * cols_ + col];}
 	inline const T & element(size_t row, size_t col) const {return mat[row * cols_ + col];}
+	inline const T & at(size_t row, size_t col) const {return mat[row * cols_ + col];}
 	inline Row operator[](size_t index) {return Row(this, index);}
 	inline RowConst operator[](size_t index) const {return RowConst(this, index);}
 	inline T * data(size_t index = 0) {return mat.data(index);}