diff --git a/shared/systemd/sd-adapt-shared/nm-sd-adapt-shared.h b/shared/systemd/sd-adapt-shared/nm-sd-adapt-shared.h
index 26a043f567..e2378c5b4d 100644
--- a/shared/systemd/sd-adapt-shared/nm-sd-adapt-shared.h
+++ b/shared/systemd/sd-adapt-shared/nm-sd-adapt-shared.h
@@ -70,7 +70,9 @@ G_STMT_START { \
 
 /*****************************************************************************/
 
+#ifndef VALGRIND
 #define VALGRIND 0
+#endif
 
 #define ENABLE_DEBUG_HASHMAP 0