diff --git a/Makefile.am b/Makefile.am
index eeb24f821..23dfc2ee6 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -41,11 +41,11 @@ endif
 AM_CPPFLAGS += -DDEBUG
 endif
 AM_CPPFLAGS += -iquote.
+endif
 if IS_ASAN
 AM_CFLAGS += -fsanitize=address
 AM_LDFLAGS += -fsanitize=address
 endif
-endif
 
 # Set flags for Solaris.
 if IS_SUNOS