diff --git a/sys/conf/Makefile.alpha b/sys/conf/Makefile.alpha
index b0dcd880c16..e272ca5ffd3 100644
--- a/sys/conf/Makefile.alpha
+++ b/sys/conf/Makefile.alpha
@@ -172,8 +172,8 @@ setdef0.o: setdef0.c setdefs.h
 setdef1.o: setdef1.c setdefs.h
 	${NORMAL_C}
 
-setdef0.c setdef1.c setdefs.h: ${OBJS} param.o
-	@gensetdefs ${OBJS} param.o
+setdef0.c setdef1.c setdefs.h: Makefile ${OBJS}
+	@gensetdefs ${OBJS}
 
 # this rule stops ./assym.s in .depend from causing problems
 ./assym.s: assym.s
diff --git a/sys/conf/Makefile.i386 b/sys/conf/Makefile.i386
index 12654ed5b36..e081530cd7b 100644
--- a/sys/conf/Makefile.i386
+++ b/sys/conf/Makefile.i386
@@ -172,8 +172,8 @@ setdef0.o: setdef0.c setdefs.h
 setdef1.o: setdef1.c setdefs.h
 	${NORMAL_C}
 
-setdef0.c setdef1.c setdefs.h: ${OBJS} param.o
-	@gensetdefs ${OBJS} param.o
+setdef0.c setdef1.c setdefs.h: Makefile ${OBJS}
+	@gensetdefs ${OBJS}
 
 # this rule stops ./assym.s in .depend from causing problems
 ./assym.s: assym.s
diff --git a/sys/conf/Makefile.pc98 b/sys/conf/Makefile.pc98
index f2ee3eb4549..bd6a3991ec0 100644
--- a/sys/conf/Makefile.pc98
+++ b/sys/conf/Makefile.pc98
@@ -174,8 +174,8 @@ setdef0.o: setdef0.c setdefs.h
 setdef1.o: setdef1.c setdefs.h
 	${NORMAL_C}
 
-setdef0.c setdef1.c setdefs.h: ${OBJS} param.o
-	@gensetdefs ${OBJS} param.o
+setdef0.c setdef1.c setdefs.h: Makefile ${OBJS}
+	@gensetdefs ${OBJS}
 
 # this rule stops ./assym.s in .depend from causing problems
 ./assym.s: assym.s
diff --git a/sys/conf/Makefile.powerpc b/sys/conf/Makefile.powerpc
index 12654ed5b36..e081530cd7b 100644
--- a/sys/conf/Makefile.powerpc
+++ b/sys/conf/Makefile.powerpc
@@ -172,8 +172,8 @@ setdef0.o: setdef0.c setdefs.h
 setdef1.o: setdef1.c setdefs.h
 	${NORMAL_C}
 
-setdef0.c setdef1.c setdefs.h: ${OBJS} param.o
-	@gensetdefs ${OBJS} param.o
+setdef0.c setdef1.c setdefs.h: Makefile ${OBJS}
+	@gensetdefs ${OBJS}
 
 # this rule stops ./assym.s in .depend from causing problems
 ./assym.s: assym.s