diff --git a/src/internal.h b/src/internal.h
index 6625437..1b00f20 100644
--- a/src/internal.h
+++ b/src/internal.h
@@ -11,6 +11,9 @@ extern "C" {
 
 #define DEINIT_LIST(items, len, item_deinit) \
     do {                                     \
+        if ((items) == NULL) {               \
+            break;                           \
+        }                                    \
         for (size_t i = 0; i < (len); i++) { \
             item_deinit(&((items)[i]));      \
         }                                    \