diff --git a/gebs.h b/gebs.h
index c081503..4d9fd4e 100644
--- a/gebs.h
+++ b/gebs.h
@@ -387,6 +387,9 @@ void gebs_rebuild_self1_alloc(Gebs_Allocator *alloc, int argc, char ** argv,
 ({ \
     const char *__deps[] = { __VA_ARGS__ }; \
     bool __ok = false; \
+    if (sizeof(__deps)/sizeof(__deps[0]) == 0) { \
+        __ok = true; \
+    } \
     for (size_t __i = 0; __i < sizeof(__deps)/sizeof(__deps[0]); __i++) { \
         if (gebs_needs_rebuild((out), __deps[__i])) { \
             __ok = true; \