diff --git a/agent/prototyper.py b/agent/prototyper.py
index d77be5d3b..e01866fac 100644
--- a/agent/prototyper.py
+++ b/agent/prototyper.py
@@ -132,7 +132,7 @@ def _validate_fuzz_target_and_build_script_via_compile(
 
     # Replace fuzz target and build script in the container.
     replace_file_content_command = (
-        'cat << "EOF" > {file_path}\n{file_content}\nEOF')
+        'cat << "OFG_EOF" > {file_path}\n{file_content}\nOFG_EOF')
     compilation_tool.execute(
         replace_file_content_command.format(
             file_path=benchmark.target_path,