diff --git a/src/main/java/models/terms/DependencyTerm.java b/src/main/java/models/terms/DependencyTerm.java
index b94f93e..5387e41 100644
--- a/src/main/java/models/terms/DependencyTerm.java
+++ b/src/main/java/models/terms/DependencyTerm.java
@@ -20,7 +20,7 @@
 	public DependencyTerm(EvaluatableTerm dependingTerm, List<EvaluatableTerm> dependedTerms, List<EvaluatableTerm> argumentTerms) {
 		super(-1, -1);
 		if (dependedTerms.size() != argumentTerms.size()) {
-			throw new SyntaxException("dependedTerms size does not equals arugmetTerms size.");
+			throw new SyntaxException("DependedTerms size must equal arugmetTerms size.");
 		}
 		this.size = dependingTerm.getSize();
 		int dependedOrder = dependedTerms.get(0).getOrder();
@@ -32,7 +32,7 @@
 			EvaluatableTerm dependedTerm = dependedTerms.get(i);
 			EvaluatableTerm argTerm = argumentTerms.get(i);
 			if (dependedTerm.getOrder() != dependedOrder) {
-				throw new SyntaxException("depended term's order not same");
+				throw new SyntaxException("All dependedTerm must have the same order");
 			}
 			maxArgOrder = Math.max(maxArgOrder, argTerm.getOrder());
 			termPairs.computeIfAbsent(dependedTerm, k -> TreeMultiset.create()).add(argTerm);