diff --git a/src/strings.cpp b/src/strings.cpp
--- a/src/strings.cpp
+++ b/src/strings.cpp
@@ -203,7 +203,7 @@ static char *FormatNumber(char *buff, in
 			num = num % divisor;
 		}
 		if (tot |= quot || i == 19) {
-			buff += seprintf(buff, last, "%i", quot);
+			buff += seprintf(buff, last, "%i", (int)quot);
 			if ((i % 3) == 1 && i != 19) buff = strecpy(buff, separator, last);
 		}