diff --git a/src/Config.zig b/src/Config.zig
index 5633ce3..55eec53 100644
--- a/src/Config.zig
+++ b/src/Config.zig
@@ -159,7 +159,7 @@ pub fn configChanged(config: *Config, allocator: std.mem.Allocator, builtin_crea
                         // We know this is allocated with `allocator`, we just steal it!
                         config.zig_lib_path = json_env.lib_dir.?;
                         json_env.lib_dir = null;
-                        logger.info("Using zig lib path '{s}'", .{config.zig_lib_path});
+                        logger.info("Using zig lib path '{?s}'", .{config.zig_lib_path});
                     }
                 },
                 else => logger.err("zig env invocation failed", .{}),
diff --git a/src/DocumentStore.zig b/src/DocumentStore.zig
index 146c570..5f75631 100644
--- a/src/DocumentStore.zig
+++ b/src/DocumentStore.zig
@@ -255,7 +255,7 @@ fn newDocument(self: *DocumentStore, uri: []const u8, text: [:0]u8) anyerror!*Ha
         if (build_file.builtin_uri == null) {
             if (self.config.builtin_path != null) {
                 build_file.builtin_uri = try URI.fromPath(self.allocator, self.config.builtin_path.?);
-                log.info("builtin config not found, falling back to default: {s}", .{build_file.builtin_uri});
+                log.info("builtin config not found, falling back to default: {?s}", .{build_file.builtin_uri});
             }
         }
 
diff --git a/src/Server.zig b/src/Server.zig
index ef49fed..8661bce 100644
--- a/src/Server.zig
+++ b/src/Server.zig
@@ -51,7 +51,7 @@ pub fn log(comptime message_level: std.log.Level, comptime scope: @Type(.EnumLit
     }
     // After shutdown, pipe output to stderr
     if (!keep_running) {
-        std.debug.print("[{s}-{s}] " ++ format ++ "\n", .{ @tagName(message_level), @tagName(scope) } ++ args);
+        std.debug.print("[{?s}-{?s}] " ++ format ++ "\n", .{ @tagName(message_level), @tagName(scope) } ++ args);
         return;
     }
 
@@ -59,7 +59,7 @@ pub fn log(comptime message_level: std.log.Level, comptime scope: @Type(.EnumLit
     var arena = std.heap.ArenaAllocator.init(std.heap.page_allocator);
     defer arena.deinit();
 
-    var message = std.fmt.allocPrint(arena.allocator(), "[{s}-{s}] " ++ format, .{ @tagName(message_level), @tagName(scope) } ++ args) catch {
+    var message = std.fmt.allocPrint(arena.allocator(), "[{?s}-{?s}] " ++ format, .{ @tagName(message_level), @tagName(scope) } ++ args) catch {
         std.debug.print("Failed to allocPrint message.\n", .{});
         return;
     };