diff --git a/README.md b/README.md
index d89517f..aa72ea9 100644
--- a/README.md
+++ b/README.md
@@ -384,9 +384,9 @@ Profiling
 Prepare `profile.data`:
 
 ```
-zig build -Drelease-small=true
-perf record --call-graph=dwarf \
-    zig-out/bin/turbo-unix2db --passwd passwd2 --group group2
+zig build -Drelease-small=true && \
+    perf record --call-graph=dwarf \
+        zig-out/bin/turbo-unix2db --passwd passwd2 --group group2
 ```
 
 Perf interactive:
@@ -398,8 +398,7 @@ perf report -i perf.data
 Flame graph:
 
 ```
-perf script | inferno-collapse-perf > stacks.folded
-inferno-flamegraph stacks.folded > profile.svg
+perf script | inferno-collapse-perf | inferno-flamegraph > profile.svg
 ```
 
 [git-subtrac]: https://apenwarr.ca/log/20191109
diff --git a/src/unix2db.zig b/src/unix2db.zig
index 761b06b..05fbb92 100644
--- a/src/unix2db.zig
+++ b/src/unix2db.zig
@@ -3,9 +3,9 @@ const fs = std.fs;
 const io = std.io;
 const mem = std.mem;
 const os = std.os;
+const heap = std.heap;
 const ArrayList = std.ArrayList;
 const Allocator = std.mem.Allocator;
-const GeneralPurposeAllocator = std.heap.GeneralPurposeAllocator;
 
 const flags = @import("flags.zig");
 const User = @import("User.zig");
@@ -26,14 +26,12 @@ const usage =
 pub fn main() !void {
     // This line is here because of https://github.com/ziglang/zig/issues/7807
     const argv: []const [*:0]const u8 = os.argv;
-    var gpa = GeneralPurposeAllocator(.{}){};
-    defer gpa.deinit();
-    const allocator = gpa.allocator();
+    const gpa = heap.raw_c_allocator;
 
     const stderr = io.getStdErr().writer();
     const stdout = io.getStdOut().writer();
 
-    const return_code = execute(allocator, stdout, stderr, argv[1..]);
+    const return_code = execute(gpa, stdout, stderr, argv[1..]);
     os.exit(return_code);
 }