diff --git a/jlc/Makefile b/jlc/Makefile
index 2452652..276abd6 100644
--- a/jlc/Makefile
+++ b/jlc/Makefile
@@ -2,16 +2,18 @@
 FLEX := flex
 BISON := bison
 
-all: jlc
+TARGET := jlc
 
-jlc: lex.yy.c jl.tab.c
+all: $(TARGET)
+
+$(TARGET): lex.yy.c $(TARGET).tab.c
 	$(CC) -o $@ $^
 
-jl.tab.c jl.tab.h: jl.y
+$(TARGET).tab.c $(TARGET).tab.h: $(TARGET).y
 	$(BISON) -d $<
 
-lex.yy.c: jl.lex
+lex.yy.c: $(TARGET).lex
 	$(FLEX) $<
 
 clean:
-	-rm -f lex.yy.c jl.tab.c jl.tab.h *~ *.o jlc
+	-rm -f lex.yy.c $(TARGET).tab.c $(TARGET).tab.h *~ *.o $(TARGET)
diff --git a/jlc/jl.lex b/jlc/jlc.lex
similarity index 97%
rename from jlc/jl.lex
rename to jlc/jlc.lex
index 8ad631f..257910c 100644
--- a/jlc/jl.lex
+++ b/jlc/jlc.lex
@@ -1,6 +1,6 @@
 
 %{
-#include "jl.tab.h"
+#include "jlc.tab.h"
 %}
 
 %%
diff --git a/jlc/jl.y b/jlc/jlc.y
similarity index 100%
rename from jlc/jl.y
rename to jlc/jlc.y