diff --git a/src/libslic3r/GCodeReader.cpp b/src/libslic3r/GCodeReader.cpp
index 7b106463a..aa04e69f2 100644
--- a/src/libslic3r/GCodeReader.cpp
+++ b/src/libslic3r/GCodeReader.cpp
@@ -152,7 +152,7 @@ bool GCodeReader::parse_file_raw_internal(const std::string &filename, ParseLine
             auto it_end = it;
             for (; it_end != it_bufend && ! (eol = *it_end == '\r' || *it_end == '\n'); ++ it_end)
                 if (*it_end == '\n')
-                    line_end_callback((it_end - buffer.begin()) + 1);
+                    line_end_callback(file_pos + (it_end - buffer.begin()) + 1);
             // End of line is indicated also if end of file was reached.
             eol |= eof && it_end == it_bufend;
             if (eol) {
@@ -173,7 +173,7 @@ bool GCodeReader::parse_file_raw_internal(const std::string &filename, ParseLine
             if (it != it_bufend && *it == '\r')
                 ++ it;
             if (it != it_bufend && *it == '\n') {
-                line_end_callback((it - buffer.begin()) + 1);
+                line_end_callback(file_pos + (it - buffer.begin()) + 1);
                 ++ it;
             }
         }