diff --git a/daspk31/Makefile b/daspk31/Makefile
index 8e840b2..cab9ad8 100644
--- a/daspk31/Makefile
+++ b/daspk31/Makefile
@@ -23,10 +23,10 @@ $(DLIB): $(DOBJ)
 %.o: %.f
 	$(F77) $(CFLAGS) $(FFLAGS) -c $< -o $@
 
-solver/%.f: | daspk31.tgz
-	tar zxvf daspk31.tgz -C ../
+solver/%.f: | daspk31.tar
+	tar zxvf daspk31.tar -C ../
 
-daspk31.tgz:
+daspk31.tar:
 	./download_daspk31.sh
 
 clean:
diff --git a/daspk31/download_daspk31.sh b/daspk31/download_daspk31.sh
index f120c42..9983ca5 100755
--- a/daspk31/download_daspk31.sh
+++ b/daspk31/download_daspk31.sh
@@ -1,4 +1,3 @@
 #!/bin/bash
 echo 'Downloading and unpacking DASPK 3.1 fortran source files...'
 wget https://cse.cs.ucsb.edu/sites/cse.cs.ucsb.edu/files/assets/daspk31.tar
-