diff --git a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/comparisons/AbstractComparisonEvaluator.java b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/comparisons/AbstractComparisonEvaluator.java
index e055d78..b13c7cc 100644
--- a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/comparisons/AbstractComparisonEvaluator.java
+++ b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/comparisons/AbstractComparisonEvaluator.java
@@ -86,6 +86,25 @@
         evalRight.evaluate(tuple);
     }
 
+    protected void checkComparable() throws AlgebricksException {
+        if (outLeft.getLength() != 0) {
+            ATypeTag typeTag = EnumDeserializer.ATYPETAGDESERIALIZER.deserialize(outLeft.getByteArray()[0]);
+            switch (typeTag) {
+                case DURATION:
+                case INTERVAL:
+                case LINE:
+                case POINT:
+                case POINT3D:
+                case POLYGON:
+                case CIRCLE:
+                case RECTANGLE:
+                    throw new AlgebricksException("Inequality comparison for " + typeTag + " is not defined.");
+                default:
+                    return;
+            }
+        }
+    }
+
     protected ComparisonResult compareResults() throws AlgebricksException {
         boolean isLeftNull = false;
         boolean isRightNull = false;
diff --git a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/comparisons/ComparisonEvalFactory.java b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/comparisons/ComparisonEvalFactory.java
index ed77276..8d57c2e 100644
--- a/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/comparisons/ComparisonEvalFactory.java
+++ b/asterix-runtime/src/main/java/edu/uci/ics/asterix/runtime/evaluators/comparisons/ComparisonEvalFactory.java
@@ -121,6 +121,7 @@
         @Override
         public void evaluate(IFrameTupleReference tuple) throws AlgebricksException {
             evalInputs(tuple);
+            checkComparable();
             ComparisonResult r = compareResults();
             if (r == ComparisonResult.UNKNOWN) {
                 try {
@@ -150,6 +151,7 @@
         @Override
         public void evaluate(IFrameTupleReference tuple) throws AlgebricksException {
             evalInputs(tuple);
+            checkComparable();
             ComparisonResult r = compareResults();
             if (r == ComparisonResult.UNKNOWN) {
                 try {
@@ -178,6 +180,7 @@
         @Override
         public void evaluate(IFrameTupleReference tuple) throws AlgebricksException {
             evalInputs(tuple);
+            checkComparable();
             ComparisonResult r = compareResults();
             if (r == ComparisonResult.UNKNOWN) {
                 try {
@@ -207,6 +210,7 @@
         @Override
         public void evaluate(IFrameTupleReference tuple) throws AlgebricksException {
             evalInputs(tuple);
+            checkComparable();
             ComparisonResult r = compareResults();
             if (r == ComparisonResult.UNKNOWN) {
                 try {