diff --git a/lua/gemini/completion.lua b/lua/gemini/completion.lua
index d40ffa6..cbcdecd 100644
--- a/lua/gemini/completion.lua
+++ b/lua/gemini/completion.lua
@@ -76,19 +76,28 @@ function M.trigger_completion()
     local line = cursor[1]
     local col = cursor[2]
     
-    -- Get current buffer content for context
-    local lines = vim.api.nvim_buf_get_lines(0, math.max(0, line - 10), line, false)
-    local prefix = table.concat(lines, "\n")
+    -- Get entire buffer content
+    local lines = vim.api.nvim_buf_get_lines(0, 0, -1, false)
     
-    -- Get current line up to cursor
-    local current_line = vim.api.nvim_get_current_line()
-    local before_cursor = string.sub(current_line, 1, col)
+    -- Split into before and after cursor
+    local before_lines = {}
+    local after_lines = {}
+    
+    -- Copy lines before cursor
+    for i = 1, line - 1 do
+        table.insert(before_lines, lines[i])
+    end
+    -- Add current line up to cursor
+    local current_line = lines[line]
+    table.insert(before_lines, string.sub(current_line, 1, col))
+    
+    -- Combine all lines before cursor
+    local prefix = table.concat(before_lines, "\n")
     
     -- Construct prompt for Gemini
     local prompt = string.format(
-        "Complete this code. Only provide the completion, no explanation:\n%s\n%s",
-        prefix,
-        before_cursor
+        "Complete this code. Only provide the completion, no explanation:\n%s",
+        prefix
     )
     
     -- Get completion from Gemini