diff --git a/Makefile b/Makefile
index e119d5b..52c2dd0 100644
--- a/Makefile
+++ b/Makefile
@@ -1,12 +1,13 @@
 .POSIX:
 .SUFFIXES:
-.SUFFIXES: .1.scd .1
 
-PREFIX?=/usr/local
-BINDIR?=$(PREFIX)/bin
-MANDIR?=$(PREFIX)/share/man
-GO?=go
-GOFLAGS?=
+PREFIX=/usr/local
+BINDIR=$(PREFIX)/bin
+MANDIR=$(PREFIX)/share/man
+
+RM=rm
+GO=go
+GOFLAGS=
 
 all: kiln docs
 
@@ -15,8 +16,8 @@ kiln:
 
 docs: docs/kiln.1
 
-.1.scd.1:
-	scdoc < $< > $@
+docs/kiln.1: docs/kiln.1.scd
+	scdoc < docs/kiln.1.scd > $@
 
 clean:
 	$(RM) kiln