diff --git a/subject/CMakeLists.txt b/subject/CMakeLists.txt
index 3930930..7b42e0e 100644
--- a/subject/CMakeLists.txt
+++ b/subject/CMakeLists.txt
@@ -1,4 +1,4 @@
 add_executable(subject main.c)
 add_dependencies(subject spslr_pinpoint spslr_finalize spslr_selfpatch)
 target_link_libraries(subject PRIVATE spslr_selfpatch)
-target_compile_options(subject PRIVATE -fplugin=$<TARGET_FILE:spslr_pinpoint> -fdump-tree-separate_offset -fdump-tree-asm_offset)
+target_compile_options(subject PRIVATE -O1 -fplugin=$<TARGET_FILE:spslr_pinpoint> -fdump-tree-separate_offset -fdump-tree-asm_offset)