diff --git a/assignments/PA3/Makefile b/assignments/PA3/Makefile
index c13b80c..c85fef4 100644
--- a/assignments/PA3/Makefile
+++ b/assignments/PA3/Makefile
@@ -75,3 +75,10 @@ clean-compile:
 	${SHELL} -ec '${DEPEND} $< | sed '\''s/\($*\.o\)[ :]*/\1 $@ : /g'\'' > $@'
 
 -include ${CFIL:.cc=.d}
+
+TESTCASE = good.cl
+comparetest: parser
+	./stdparser ${TESTCASE} > std.out
+	./myparser ${TESTCASE} > my.out
+	diff std.out my.out
+	rm std.out my.out
\ No newline at end of file
diff --git a/assignments/PA3/stdparser b/assignments/PA3/stdparser
new file mode 100755
index 0000000..a1f9f7a
--- /dev/null
+++ b/assignments/PA3/stdparser
@@ -0,0 +1,2 @@
+#!/bin/bash -f
+../../bin/lexer $* | ../../bin/parser $*
\ No newline at end of file