Search TFBS with matrices algorithm creates invalid annotation qualifiers

Search TFBS with matrices algorithm creates invalid annotation qualifiers: qualifier name shouldn't contain spaces.
Steps to reproduce:
1. Open "human_T1.fa".
2. Select

{Analyze->Search TFBS with matrices}

in the context menu.
Expected state: "Weight matrix search" dialog appears.
3. Set the matrix:

{/data/position_weight_matrix/JASPAR/fungi/MA0265.1.pfm}

. Click the "Search" button.
Expected state: some info appears in the dialog's widgets. The "Save as annotations" button is enabled.
4. Press the "Save as annotations" button.
Expected state: the "Create annotation" dialog appears.
5. Click the "Create" button and close the "Weight matrix search" dialog.
6. Open any annotation, look at qualifiers. There is a "Weight matrix model" qualifier.
Qualifier name shouldn't contain spaces. It may contains letters, numbers, symbols '-', '_', '/', '*'.