diff --git a/src/libslic3r/LocalesUtils.cpp b/src/libslic3r/LocalesUtils.cpp
index d321072335..da372ba3fd 100644
--- a/src/libslic3r/LocalesUtils.cpp
+++ b/src/libslic3r/LocalesUtils.cpp
@@ -4,6 +4,7 @@
     #include <charconv>
 #endif
 #include <stdexcept>
+#include <sstream>
 
 #include <fast_float/fast_float.h>