diff --git a/data/plugins/projectsearch.lua b/data/plugins/projectsearch.lua
index 45967697..dda3a2d0 100644
--- a/data/plugins/projectsearch.lua
+++ b/data/plugins/projectsearch.lua
@@ -171,7 +171,7 @@ function ResultsView:draw()
   local ox, oy = self:get_content_offset()
   local x, y = ox + style.padding.x, oy + style.padding.y
   local files_number = core.project_files_number()
-  local per = files_number and self.last_file_idx / files_number or 1
+  local per = common.clamp(files_number and self.last_file_idx / files_number or 1, 0, 1)
   local text
   if self.searching then
     if files_number then