diff --git a/lib/src/stdlib/math_lib.dart b/lib/src/stdlib/math_lib.dart
index 4b0c505..972b4eb 100644
--- a/lib/src/stdlib/math_lib.dart
+++ b/lib/src/stdlib/math_lib.dart
@@ -102,7 +102,7 @@ class MathLib{
     var imin = 1;        /* index of current maximum value */
     ls.argCheck(n >= 1, 1, "value expected");
     for (var i = 2; i <= n; i++){
-      if(ls.compare(imin, i, CmpOp.luaOpLt)){
+      if(ls.compare(i, imin, CmpOp.luaOpLt)){
         imin = i;
       }
     }