diff --git a/src/vec.h b/src/vec.h
index 235da7d..38953a0 100644
--- a/src/vec.h
+++ b/src/vec.h
@@ -33,7 +33,7 @@
 
 #define vec_push(v, val)\
   ( vec_expand_(vec_unpack_(v)) ? -1 :\
-    ((v)->data[(v)->length++] = (val)), 0 )
+    ((v)->data[(v)->length++] = (val), 0), 0 )
 
 
 #define vec_pop(v)\
@@ -52,7 +52,7 @@
 
 #define vec_insert(v, idx, val)\
   ( vec_insert_(vec_unpack_(v), idx) ? -1 :\
-    ((v)->data[idx] = (val)), (v)->length++, 0 )
+    ((v)->data[idx] = (val), 0), (v)->length++, 0 )
     
 
 #define vec_sort(v, fn)\