diff --git a/Makefile b/Makefile
index 16b753d..6e8a54d 100644
--- a/Makefile
+++ b/Makefile
@@ -22,4 +22,11 @@ clean :
 	rm -r src/Grammar
 	rm language
 
+test :
+	./language ./sample-programs/basic-1
+	./language ./sample-programs/basic-2
+	./language ./sample-programs/basic-3
+	./language ./sample-programs/basic-4
+	./language ./sample-programs/basic-5
+
 # EOF
diff --git a/sample-programs/basic-5 b/sample-programs/basic-5
index 3168484..9984ddd 100644
--- a/sample-programs/basic-5
+++ b/sample-programs/basic-5
@@ -4,6 +4,6 @@ add x y = x + y;
 
 double n = n + n;
 
-apply f x = \y -> f x y;
+apply f x = \y. f x y;
 
 main = apply (id add) ((\x. x + 1) 1) (double 3);