diff --git a/a1/src/APL/AST.hs b/a1/src/APL/AST.hs
index 9172de6..3d341f1 100644
--- a/a1/src/APL/AST.hs
+++ b/a1/src/APL/AST.hs
@@ -32,10 +32,10 @@ printExp (Mul e1 e2)      = "("++(printExp e1)++" * "++(printExp e2)++")"
 printExp (Sub e1 e2)      = "("++(printExp e1)++" - "++(printExp e2)++")"
 printExp (Div e1 e2)      = "("++(printExp e1)++" / "++(printExp e2)++")"
 printExp (Pow e1 e2)      = "("++(printExp e1)++" ** "++(printExp e2)++")"
+printExp (Eql e1 e2)      = "("++(printExp e1)++" == "++(printExp e2)++")"
 printExp (If e1 e2 e3)    = "(if "++(printExp e1)++" then "++(printExp e2)++" else "++(printExp e3)++")"
 printExp (Var var)        = var
 printExp (Let var e1 e2)  = "(let "++var++" = "++(printExp e1)++" in "++(printExp e2)++")"
 printExp (Lambda var e)   = "(\\"++var++" -> "++(printExp e)++")"
 printExp (Apply e1 e2)    = "("++(printExp e1)++" "++(printExp e2)++")"
 printExp (TryCatch e1 e2) = "(try "++(printExp e1)++" catch "++(printExp e2)++")"
-printExp _ = "error"
diff --git a/a1/src/APL/AST_Tests.hs b/a1/src/APL/AST_Tests.hs
index 82d953a..fd3db06 100644
--- a/a1/src/APL/AST_Tests.hs
+++ b/a1/src/APL/AST_Tests.hs
@@ -23,6 +23,9 @@ tests =
         printExp (Div (CstInt 1) (CstInt 9999)) @?= "(1 / 9999)",
       testCase "Pow" $
         printExp (Pow (CstInt 1) (CstInt 9999)) @?= "(1 ** 9999)",
+      testCase "Eql" $
+        printExp (Eql (CstInt 2) (CstInt 3))
+        @?= "(2 == 3)",
       testCase "If" $
         printExp (If (CstBool True) (CstInt 2) (CstInt 3))
         @?= "(if True then 2 else 3)",