diff --git a/Makefile b/Makefile
index ae85ef2..67e0309 100644
--- a/Makefile
+++ b/Makefile
@@ -39,4 +39,4 @@ ${SATTRACK}: ${SGP4LIB} ${SATTRACKOBJECTS}
 	$(CC) $(CFLAGS) $< -o $@
 
 clean:
-	rm -rf *.o ${SGP4LIB} ${TESTPROG}
+	rm -rf *.o ${SGP4LIB} ${TESTPROG} ${SATTRACK}