diff --git a/include/fastcdr/Cdr.h b/include/fastcdr/Cdr.h
index c3754ca8..126bf2b9 100644
--- a/include/fastcdr/Cdr.h
+++ b/include/fastcdr/Cdr.h
@@ -1793,7 +1793,7 @@ class Cdr
     {
         uint32_t length = 0;
         const char* str = read_string(length);
-        value = std::string(str, length);
+        value.assign(str, length);
         return *this;
     }
 
diff --git a/include/fastcdr/FastCdr.h b/include/fastcdr/FastCdr.h
index 1a26b9c7..4cce3920 100644
--- a/include/fastcdr/FastCdr.h
+++ b/include/fastcdr/FastCdr.h
@@ -1552,7 +1552,7 @@ class Cdr_DllAPI FastCdr
     {
         uint32_t length = 0;
         const char* str = read_string(length);
-        string_t = std::string(str, length);
+        string_t.assign(str, length);
         return *this;
     }