diff --git a/src/problem/mod.rs b/src/problem/mod.rs
index fc2ad03..60e3f88 100644
--- a/src/problem/mod.rs
+++ b/src/problem/mod.rs
@@ -6,7 +6,7 @@ mod p2_add_two_numbers;
 mod p3_longest_substring_without_repeating_characters;
 mod p162_find_peak_element;
 mod p2828_check_if_a_string_is_an_acronym_of_words;
-mod p0052_n_queens_ii;
+mod p52_n_queens_ii;
 mod p912_sort_an_array;
 mod p1276_number_of_burgers_with_no_waste_of_ingredients;
 mod p6_zigzag_conversion;
diff --git a/src/problem/p0052_n_queens_ii.rs b/src/problem/p52_n_queens_ii.rs
similarity index 100%
rename from src/problem/p0052_n_queens_ii.rs
rename to src/problem/p52_n_queens_ii.rs