diff --git a/plugins/cmp.nix b/plugins/cmp.nix
index d9b700f..9789277 100644
--- a/plugins/cmp.nix
+++ b/plugins/cmp.nix
@@ -38,7 +38,12 @@ _:
         "<C-Y>" = "cmp.config.disable";
         "<C-E>" = "cmp.mapping { i = cmp.mapping.abort(), c = cmp.mapping.close() }";
         "<CR>" = "cmp.mapping.confirm { select = false }";
-        "<Tab>" = "cmp.mapping(function(fallback)
+        "<Tab>" = ''cmp.mapping(function(fallback)
+          local function has_words_before()
+            local line, col = (unpack or table.unpack)(vim.api.nvim_win_get_cursor(0))
+            return col ~= 0 and vim.api.nvim_buf_get_lines(0, line - 1, line, true)[1]:sub(col, col):match "%s" == nil
+          end
+
           if (cmp.core.view:visible() or vim.fn.pumvisible() == 1) then
             cmp.select_next_item()
           elseif vim.snippet and vim.snippet.active { direction = 1 } then
@@ -48,7 +53,7 @@ _:
           else
             fallback()
           end
-        end, { 'i', 's' })";
+        end, { 'i', 's' })'';
         "<S-Tab>" = "cmp.mapping(function(fallback)
           if (cmp.core.view:visible() or vim.fn.pumvisible() == 1) then
             cmp.select_prev_item()