1 files changed, 1 insertions, 1 deletions
diff --git a/indra/test/io.cpp b/indra/test/io.cpp
index 3bb549a98a..f77402065a 100644
--- a/indra/test/io.cpp
+++ b/indra/test/io.cpp
@@ -293,7 +293,7 @@ namespace tut
             len = BUFFER_LEN;
             last = mBuffer.readAfter(ch.in(), last, (U8*)buf, len);
             char* newline = strchr((char*)buf, '\n');
-            S32 offset = -((len - 1) - (newline - buf));
+            S32 offset = -((len - 1) - (S32)(newline - buf));
             ++newline;
             *newline = '\0';
             last_line.assign(buf);