diff --git a/SWIG/Lib/typemaps/swigtype.swg b/SWIG/Lib/typemaps/swigtype.swg
index 233ad791b..7236db57f 100644
--- a/SWIG/Lib/typemaps/swigtype.swg
+++ b/SWIG/Lib/typemaps/swigtype.swg
@@ -122,7 +122,7 @@
 %typemap(memberin) SWIGTYPE [ANY] {
   if ($input) {
     size_t ii = 0;
-    for (; ii < $dim0; ++ii) $1[ii] = $input[ii];
+    for (; ii < (size_t)$dim0; ++ii) $1[ii] = $input[ii];
   } else {
     %variable_nullref("$type","$name");
   }