diff --git a/libstdc++-v3/testsuite/20_util/to_chars/103955.cc b/libstdc++-v3/testsuite/20_util/to_chars/103955.cc
index 3753c87ad8bd..e7f17f7a9e80 100644
--- a/libstdc++-v3/testsuite/20_util/to_chars/103955.cc
+++ b/libstdc++-v3/testsuite/20_util/to_chars/103955.cc
@@ -1,6 +1,7 @@
 // PR libstdc++/103955
 // Verify we don't crash when the floating-point to_chars overloads are passed
 // a large precision argument.
+// { dg-do run { target c++17 } }
 
 #include <charconv>