diff --git a/Makefile b/Makefile
index 0e7a5d049..ffa7c694e 100644
--- a/Makefile
+++ b/Makefile
@@ -29,7 +29,7 @@ folk/index.htm: noinfo/folk.csv noinfo/make-folklist.py
 
 ###########
 
-surveytable: 
+surveytable:
 	cd $(surveydir_path); perl tablize-csv.pl Surveys.csv; perl tablizebyname-csv.pl Surveys.csv
 
 
@@ -42,7 +42,7 @@ surveytable:
 qmlists: smkridge/204/qm.html
 
 smkridge/204/qm.html: smkridge/204/qm.csv smkridge/204/tablize-qms.pl
-        cd smkridge/204/; tablize-qms.pl qm.csv
+	cd smkridge/204/; tablize-qms.pl qm.csv
 
 ###########
 
@@ -67,27 +67,27 @@ tarfiles: noinfo/all.tgz smkridge/204/surveydata.tgz smkridge/234/surveydata.tgz
 noinfo/all.tgz: noinfo/all.3d
 	tar $(tar_flags) noinfo/all.tgz -C $(dataset_path)/.. loser
 
-smkridge/204/surveydata.tgz: smkridge/204/204.3d 
+smkridge/204/surveydata.tgz: smkridge/204/204.3d
 	tar $(tar_flags) smkridge/204/surveydata.tgz -C $(dataset_path)/caves/ 204
 
-smkridge/234/surveydata.tgz: smkridge/234/234.3d 
+smkridge/234/surveydata.tgz: smkridge/234/234.3d
 	tar $(tar_flags) smkridge/234/surveydata.tgz -C $(dataset_path)/caves/ 234
 
-plateau/76/surveydata.tgz: plateau/76/76.3d 
+plateau/76/surveydata.tgz: plateau/76/76.3d
 	tar $(tar_flags) plateau/76/surveydata.tgz -C $(dataset_path)/caves/ 76
 
-# (tarfiles depend on 3d files to avoid running the 
+# (tarfiles depend on 3d files to avoid running the
 # expensive $(shell ...) commands more than necessary.)
 
 ###########
 
 clean:
 	cut -d "," -f 6 noinfo/CAVETAB2.CSV | xargs rm -f
-	-cut -d "," -f 6 noinfo/CAVETAB2.CSV | sed 's/[^\/]*$$//; s/"//g' | xargs -l rmdir --ignore-fail-on-non-empty  > /dev/null 2>&1 
+	-cut -d "," -f 6 noinfo/CAVETAB2.CSV | sed 's/[^\/]*$$//; s/"//g' | xargs -l rmdir --ignore-fail-on-non-empty  > /dev/null 2>&1
 # remove empty directories
-	rm -f indxal.htm folk/index.htm noinfo/all.pos 
+	rm -f indxal.htm folk/index.htm noinfo/all.pos
 	rm -f noinfo/all.3d smkridge/204/204.3d smkridge/234/234.3d plateau/76/76.3d
-	rm -f smkridge/204/surveydata.tgz smkridge/234/surveydata.tgz plateau/76/surveydata.tgz noinfo/all.tgz 
+	rm -f smkridge/204/surveydata.tgz smkridge/234/surveydata.tgz plateau/76/surveydata.tgz noinfo/all.tgz
 	rm -f $(surveydir_path)/surveytable.html
 	rm -f report.html