diff --git a/configure.py b/configure.py
index 6b25e6f04d..595d146bfc 100755
--- a/configure.py
+++ b/configure.py
@@ -240,7 +240,7 @@ modes = {
     'debug': {
         'sanitize': '-fsanitize=address -fsanitize=leak -fsanitize=undefined',
         'sanitize_libs': '-lasan -lubsan',
-        'opt': '-O0 -DDEBUG -DDEBUG_SHARED_PTR -DDEBUG_LSA_SANITIZER',
+        'opt': '-O0 -DDEBUG -DDEBUG_LSA_SANITIZER',
         'libs': '',
     },
     'release': {