diff --git a/src/algorithms/PVT/libs/rtcm.h b/src/algorithms/PVT/libs/rtcm.h
index 0cbba9d07..794ca2126 100644
--- a/src/algorithms/PVT/libs/rtcm.h
+++ b/src/algorithms/PVT/libs/rtcm.h
@@ -594,11 +594,7 @@ private:
         inline void encode_header()
         {
             char header[header_length + 1] = "";
-            int num_chars = std::snprintf(header, header_length + 1, "GS%4d", std::min(static_cast<int>(body_length_), static_cast<int>(max_body_length)));
-            if ((num_chars <= 0) or (num_chars > header_length))
-                {
-                    // avoid Wformat-truncation warning
-                }
+            std::snprintf(header, header_length + 1, "GS%4d", std::max(std::min(static_cast<int>(body_length_), static_cast<int>(max_body_length)), 0));
             std::memcpy(data_, header, header_length);
         }