diff --git a/lib/fort.c b/lib/fort.c
index 2f86b77..dfec307 100644
--- a/lib/fort.c
+++ b/lib/fort.c
@@ -237,10 +237,9 @@ fort_status_t vector_swap(vector_t *cur_vec, vector_t *mv_vec, size_t pos);
 #define FOR_EACH(type, item, vector) \
     FOR_EACH_(type, item, vector, UNIQUE_NAME(i))
 
-FT_INTERNAL
-vector_t *copy_vector(vector_t *);
 
 #ifdef FT_TEST_BUILD
+vector_t *copy_vector(vector_t *);
 size_t vector_index_of(const vector_t *, const void *item);
 int vector_erase(vector_t *, size_t index);
 void vector_clear(vector_t *);
@@ -1408,8 +1407,6 @@ fort_cell_opt_container_t *copy_cell_options(fort_cell_opt_container_t *cont)
 FT_INTERNAL
 fort_table_options_t *copy_table_options(const fort_table_options_t *option)
 {
-    // todo: normal implementation, do deep copy of col options
-
     fort_table_options_t *new_opt = create_table_options();
     if (new_opt == NULL)
         return NULL;
@@ -2923,6 +2920,9 @@ fort_status_t vector_swap(vector_t *cur_vec, vector_t *mv_vec, size_t pos)
     return FT_SUCCESS;
 }
 
+
+#ifdef FT_TEST_BUILD
+
 vector_t *copy_vector(vector_t *v)
 {
     if (v == NULL)
@@ -2938,8 +2938,6 @@ vector_t *copy_vector(vector_t *v)
     return new_vector;
 }
 
-#ifdef FT_TEST_BUILD
-
 size_t vector_index_of(const vector_t *vector, const void *item)
 {
     assert(vector);
diff --git a/src/options.c b/src/options.c
index 02c3559..7e333d8 100644
--- a/src/options.c
+++ b/src/options.c
@@ -659,8 +659,6 @@ fort_cell_opt_container_t *copy_cell_options(fort_cell_opt_container_t *cont)
 FT_INTERNAL
 fort_table_options_t *copy_table_options(const fort_table_options_t *option)
 {
-    // todo: normal implementation, do deep copy of col options
-
     fort_table_options_t *new_opt = create_table_options();
     if (new_opt == NULL)
         return NULL;
diff --git a/src/vector.c b/src/vector.c
index 82d23e8..9c6e8e2 100644
--- a/src/vector.c
+++ b/src/vector.c
@@ -178,6 +178,9 @@ fort_status_t vector_swap(vector_t *cur_vec, vector_t *mv_vec, size_t pos)
     return FT_SUCCESS;
 }
 
+
+#ifdef FT_TEST_BUILD
+
 vector_t *copy_vector(vector_t *v)
 {
     if (v == NULL)
@@ -193,8 +196,6 @@ vector_t *copy_vector(vector_t *v)
     return new_vector;
 }
 
-#ifdef FT_TEST_BUILD
-
 size_t vector_index_of(const vector_t *vector, const void *item)
 {
     assert(vector);
diff --git a/src/vector.h b/src/vector.h
index adb0047..a350284 100644
--- a/src/vector.h
+++ b/src/vector.h
@@ -38,10 +38,9 @@ fort_status_t vector_swap(vector_t *cur_vec, vector_t *mv_vec, size_t pos);
 #define FOR_EACH(type, item, vector) \
     FOR_EACH_(type, item, vector, UNIQUE_NAME(i))
 
-FT_INTERNAL
-vector_t *copy_vector(vector_t *);
 
 #ifdef FT_TEST_BUILD
+vector_t *copy_vector(vector_t *);
 size_t vector_index_of(const vector_t *, const void *item);
 int vector_erase(vector_t *, size_t index);
 void vector_clear(vector_t *);