diff --git a/doc/environments/groupthm/Makefile b/doc/environments/groupthm/Makefile
index 7a033e9..75c481b 100644
--- a/doc/environments/groupthm/Makefile
+++ b/doc/environments/groupthm/Makefile
@@ -1,4 +1,7 @@
-all: clean-sty pdf sty
+sty:
+	pdflatex groupthm.ins
+
+all: clean pdf sty
 
 pdf:
 	pdflatex groupthm.dtx
@@ -15,7 +18,4 @@ clean: clean-sty
 clean-sty:
 	rm -f groupthm.sty
 
-sty:
-	pdflatex groupthm.ins
-
 .PHONY: pdf clean