diff --git a/lua/cmp-dotenv/dotenv.lua b/lua/cmp-dotenv/dotenv.lua
index eaf6a4a..5f28684 100644
--- a/lua/cmp-dotenv/dotenv.lua
+++ b/lua/cmp-dotenv/dotenv.lua
@@ -1,7 +1,9 @@
 local load = require('cmp-dotenv.load')
 local option = require('cmp-dotenv.option')
+local utils = require('cmp-dotenv.utils')
 
 local M = {}
+M.__index = M
 
 M.files = {}
 M.completion_items = {}
@@ -24,32 +26,8 @@ function M.set_env_variable(name, value, docs)
   M.env_variables[name] = { value = value, docs = docs }
 end
 
-local function build_completions(opts)
-  for key, v in pairs(M.env_variables) do
-    local docs = ''
-    if opts.show_content_on_docs then
-      docs = 'Content: ' .. v.value
-    end
-
-    if v.docs ~= nil then
-      docs = v.docs .. '\n\n' .. docs
-    end
-
-    table.insert(M.completion_items, {
-      label = key,
-      insertText = opts.eval_on_confirm and v.value or key,
-      word = key,
-      documentation = opts.show_documentation and {
-        kind = opts.documentation_kind,
-        value = docs,
-      },
-      kind = opts.item_kind,
-    })
-  end
-end
-
 function M.load(force, options)
-  if vim.tbl_count(M.env_variables) > 0 or force then
+  if vim.tbl_count(M.env_variables) > 0 and force ~= nil and not force then
     return
   end
   local opts = option.get(options)
@@ -68,13 +46,13 @@ function M.load(force, options)
 
   -- If the new file list is same as cached
   -- return
-  if vim.tbl_count(diff_files) == 0 and vim.tbl_count(M.env_variables) > 0 then
+  if vim.tbl_count(diff_files) == 0 and vim.tbl_count(M.env_variables) > 0 and force ~= nil and not force then
     return
   end
 
   M.files = files
-  M.env_variables = {}
-  M.completion_items = {}
+  utils.clear_table(M.env_variables)
+  utils.clear_table(M.completion_items)
 
   if opts.load_shell then
     local env_vars = vim.fn.environ()
@@ -91,7 +69,7 @@ function M.load(force, options)
     end
   end
 
-  build_completions(opts)
+  utils.build_completions(M, opts)
 end
 
 function M.as_completion()
diff --git a/lua/cmp-dotenv/utils.lua b/lua/cmp-dotenv/utils.lua
new file mode 100644
index 0000000..d9a31a4
--- /dev/null
+++ b/lua/cmp-dotenv/utils.lua
@@ -0,0 +1,33 @@
+local utils = {}
+
+function utils.build_completions(instance, opts)
+  for key, v in pairs(instance.env_variables) do
+    local docs = ''
+    if opts.show_content_on_docs then
+      docs = 'Content: ' .. v.value
+    end
+
+    if v.docs ~= nil then
+      docs = v.docs .. '\n\n' .. docs
+    end
+
+    table.insert(instance.completion_items, {
+      label = key,
+      insertText = opts.eval_on_confirm and v.value or key,
+      word = key,
+      documentation = opts.show_documentation and {
+        kind = opts.documentation_kind,
+        value = docs,
+      },
+      kind = opts.item_kind,
+    })
+  end
+end
+
+function utils.clear_table(t)
+  for k in pairs(t) do
+    t[k] = nil
+  end
+end
+
+return utils
diff --git a/spec/dotenv_spec.lua b/spec/dotenv_spec.lua
index c602be4..66af05b 100644
--- a/spec/dotenv_spec.lua
+++ b/spec/dotenv_spec.lua
@@ -21,8 +21,7 @@ end
 
 describe('Load dotenv workspace', function()
   it('Load env text', function()
-    dotenv.env_variables = {}
-    dotenv.load(nil, default_opts)
+    dotenv.load(true, default_opts)
     local all_env = dotenv.get_all_env()
     assert.are.same(3, vim.tbl_count(all_env))
     assert.are.same(
@@ -34,9 +33,8 @@ describe('Load dotenv workspace', function()
   end)
 
   it('Load local env variables', function()
-    dotenv.env_variables = {}
     local opt = vim.tbl_deep_extend('keep', { dotenv_environment = 'local' }, default_opts)
-    dotenv.load(nil, opt)
+    dotenv.load(true, opt)
     local all_env = dotenv.get_all_env()
     assert.are.same(3, vim.tbl_count(all_env))
     assert.are.same(
@@ -47,9 +45,8 @@ describe('Load dotenv workspace', function()
   end)
 
   it('Load example env variables', function()
-    dotenv.env_variables = {}
     local opt = vim.tbl_deep_extend('keep', { dotenv_environment = 'example' }, default_opts)
-    dotenv.load(nil, opt)
+    dotenv.load(true, opt)
     local all_env = dotenv.get_all_env()
     assert.are.same(2, vim.tbl_count(all_env))
   end)
@@ -57,8 +54,7 @@ end)
 
 describe('Completion dotenv workspace', function()
   it('Load completion table', function()
-    dotenv.env_variables = {}
-    dotenv.load(nil, default_opts)
+    dotenv.load(true, default_opts)
     local all = dotenv.as_completion()
 
     assert.are.same(3, vim.tbl_count(all))