diff --git a/src/str.cpp b/src/str.cpp
index 2446aad7..5ce25d90 100644
--- a/src/str.cpp
+++ b/src/str.cpp
@@ -295,8 +295,8 @@ bool
 str::startswith(const string &str_,
                 const char   *prefix_)
 {
-  return ((str_.size() >= prefix_.size()) &&
-          (str_.compare(0,prefix_.size(),prefix_) == 0));
+  return str::startswith(str_,
+                         std::string_view{prefix_});
 }
 
 bool