diff --git a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/common/CreateMBREvalFactory.java b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/common/CreateMBREvalFactory.java
index d6dbc08..616cbdc 100644
--- a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/common/CreateMBREvalFactory.java
+++ b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/common/CreateMBREvalFactory.java
@@ -63,7 +63,7 @@
                 outInput2.reset();
                 eval2.evaluate(tuple);
 
-                // type-check: (int32, int32, double)
+                // type-check: (Point/Line/Polygon/Circle/Rectangle/Null, Int32, Int32)
                 if (outInput1.getByteArray()[0] != SER_INT32_TYPE_TAG
                         || outInput2.getByteArray()[0] != SER_INT32_TYPE_TAG) {
                     throw new AlgebricksException("Expects Types: (Point/Line/Polygon/Circle/Rectangle/Null, Int32, Int32).");