diff --git a/include/gp/vector.hpp b/include/gp/vector.hpp
index fe9cdb4..05e9d27 100644
--- a/include/gp/vector.hpp
+++ b/include/gp/vector.hpp
@@ -117,7 +117,7 @@ namespace gp{
 		}
 
 		bool grow() {
-			if(sz == cap) return reserve(sz + (sz >> 1));
+			if(sz == cap) return reserve(1 + sz + (sz >> 1));
 			return true;
 		}