diff --git a/src/obidmscolumn.c b/src/obidmscolumn.c
index e3fdbc4..085c335 100644
--- a/src/obidmscolumn.c
+++ b/src/obidmscolumn.c
@@ -703,7 +703,7 @@ static int get_formatted_elt_names_length(const char* elements_names)
 
 static index_t get_line_count_per_page(OBIType_t data_type, index_t nb_elements_per_line)
 {
-	return getpagesize() / (obi_sizeof(data_type) * nb_elements_per_line);
+	return getpagesize() / obi_sizeof(data_type) / nb_elements_per_line;
 }
 
 
@@ -919,6 +919,8 @@ OBIDMS_column_p obi_create_column(OBIDMS_p     dms,
 
 	// The initial line count should be between the minimum (corresponding to the page size) and the maximum allowed
 	minimum_line_count = get_line_count_per_page(stored_data_type, nb_elements_per_line);
+	if (minimum_line_count == 0)	// Happens if high number of elements per line
+		minimum_line_count = 1;
 	if (nb_lines > MAXIMUM_LINE_COUNT)
 	{
 		obidebug(1, "\nCan't create column because of line count greater than the maximum allowed (%d)", MAXIMUM_LINE_COUNT);
@@ -1023,7 +1025,8 @@ OBIDMS_column_p obi_create_column(OBIDMS_p     dms,
 	if (new_column->data == MAP_FAILED)
 	{
 		obi_set_errno(OBICOL_UNKNOWN_ERROR);
-		obidebug(1, "\nError mmapping the data of a column");
+		obidebug(1, "\nError mmapping the data of a column.\nArguments: data_size=%lu, column_file_descriptor=%d, header_size=%lu",
+				data_size, column_file_descriptor, header_size);
 		munmap(new_column->header, header_size);
 		close(column_file_descriptor);
 		free(new_column);