diff --git a/modules/themeinstallator/themeinstallator.php b/modules/themeinstallator/themeinstallator.php
index 15c383ec5..5e0d51888 100644
--- a/modules/themeinstallator/themeinstallator.php
+++ b/modules/themeinstallator/themeinstallator.php
@@ -622,8 +622,11 @@ class ThemeInstallator extends Module
 			$var = '';
 			foreach ($this->to_install as $row)
 				if (file_exists(_IMPORT_FOLDER_.'modules/'.$row))
-					$var .= '<input type="checkbox" name="modulesToExport[]" id="'.$row.'" value="'.$row.'" checked /> <label style="display:bock;float:none" for="'.$row.'">'.$row.
-					(file_exists(_PS_MODULE_DIR_.$row) ? ' <span style="font-size:0.8em">-> '.$this->l('Warning: a module with the same name already exists').'</span>' : '').'</label><br />';
+				{
+					$module_already_exists = file_exists(_PS_MODULE_DIR_.$row);
+					$var .= '<input type="checkbox" name="modulesToExport[]" id="'.$row.'" value="'.$row.'" '.(($module_already_exists) ? '' : 'checked="checked"').' /> <label style="display:bock;float:none" for="'.$row.'">'.$row.
+						($module_already_exists ? ' <span style="font-size:0.8em">-> '.$this->l('Warning: a module with the same name already exists').'</span>' : '').'</label><br />';
+				}
 
 			if ($var != '')
 				$this->_html .= '