diff --git a/algebricks/algebricks-runtime/src/main/java/edu/uci/ics/hyracks/algebricks/runtime/operators/std/StreamProjectRuntimeFactory.java b/algebricks/algebricks-runtime/src/main/java/edu/uci/ics/hyracks/algebricks/runtime/operators/std/StreamProjectRuntimeFactory.java
index 7f10948..11f4486 100644
--- a/algebricks/algebricks-runtime/src/main/java/edu/uci/ics/hyracks/algebricks/runtime/operators/std/StreamProjectRuntimeFactory.java
+++ b/algebricks/algebricks-runtime/src/main/java/edu/uci/ics/hyracks/algebricks/runtime/operators/std/StreamProjectRuntimeFactory.java
@@ -69,17 +69,18 @@
                 for (; t < nTuple - 1; t++) {
                     appendProjectionToFrame(t, projectionList);
                 }
-                if (flushFramesRapidly) {
-                    // Whenever all the tuples in the incoming frame have been consumed, the project operator 
-                    // will push its frame to the next operator; i.e., it won't wait until the frame gets full. 
-                    appendProjectionToFrame(t, projectionList, true);
-                } else {
-                    appendProjectionToFrame(t, projectionList);
+                // Process last tuple but we must first check if there is still a tuple to process
+                if (t < nTuple) {
+                    if (flushFramesRapidly) {
+                        // Whenever all the tuples in the incoming frame have been consumed, the project operator 
+                        // will push its frame to the next operator; i.e., it won't wait until the frame gets full. 
+                        appendProjectionToFrame(t, projectionList, true);
+                    } else {
+                        appendProjectionToFrame(t, projectionList);
+                    }
                 }
-
             }
 
         };
     }
-
 }