diff --git a/include/seqan3/alignment/matrix/detail/score_matrix_single_column.hpp b/include/seqan3/alignment/matrix/detail/score_matrix_single_column.hpp
index 0c986c62d2..ba04d761b8 100644
--- a/include/seqan3/alignment/matrix/detail/score_matrix_single_column.hpp
+++ b/include/seqan3/alignment/matrix/detail/score_matrix_single_column.hpp
@@ -9,6 +9,7 @@
 
 #pragma once
 
+#include <algorithm>
 #include <ranges>
 #include <vector>
 
@@ -111,10 +112,13 @@ class score_matrix_single_column
                 score_t const initial_value = score_t{})
     {
         this->number_of_columns = number_of_columns.get();
-        optimal_column.clear();
-        horizontal_column.clear();
+
+        std::ranges::fill(optimal_column, initial_value);
         optimal_column.resize(number_of_rows.get(), initial_value);
+
+        std::ranges::fill(horizontal_column, initial_value);
         horizontal_column.resize(number_of_rows.get(), initial_value);
+
         vertical_column = views::repeat_n(initial_value, number_of_rows.get());
     }
 
diff --git a/include/seqan3/alignment/pairwise/detail/pairwise_alignment_algorithm_banded.hpp b/include/seqan3/alignment/pairwise/detail/pairwise_alignment_algorithm_banded.hpp
index 3bcc1edf9c..ac972a067d 100644
--- a/include/seqan3/alignment/pairwise/detail/pairwise_alignment_algorithm_banded.hpp
+++ b/include/seqan3/alignment/pairwise/detail/pairwise_alignment_algorithm_banded.hpp
@@ -133,15 +133,8 @@ class pairwise_alignment_algorithm_banded :
         size_t const sequence1_size = std::ranges::distance(simd_seq1_collection);
         size_t const sequence2_size = std::ranges::distance(simd_seq2_collection);
 
-#if SEQAN3_WORKAROUND_GCC_BOGUS_MEMCPY
-#    pragma GCC diagnostic push
-#    pragma GCC diagnostic ignored "-Wstringop-overflow"
-#endif // SEQAN3_WORKAROUND_GCC_BOGUS_MEMCPY
         auto && [alignment_matrix, index_matrix] =
             this->acquire_matrices(sequence1_size, sequence2_size, this->lowest_viable_score());
-#if SEQAN3_WORKAROUND_GCC_BOGUS_MEMCPY
-#    pragma GCC diagnostic pop
-#endif // SEQAN3_WORKAROUND_GCC_BOGUS_MEMCPY
 
         compute_matrix(simd_seq1_collection, simd_seq2_collection, alignment_matrix, index_matrix);