diff --git a/genpkg b/genpkg
index 0051737..47c3c49 100755
--- a/genpkg
+++ b/genpkg
@@ -415,9 +415,9 @@ pkggen() {
 		if [ -f /sbin/installpkg ]; then
 			(( CHECKFLAGS = $MKPKG & 2 ))
 			if [ "$CHECKFLAGS" == "0" ]; then
-				INSTALLOPTS="-i"
+				INSTALLOPTS="-oi"
 			else
-				INSTALLOPTS="-fi"
+				INSTALLOPTS="-foi"
 			fi
 			installpkg $INSTALLOPTS $DISTTARGET/$SRCPATH/$PKGNAME
 			CheckError "Installation of $PKGNAME failed"
@@ -697,13 +697,7 @@ if [ ! "$C_FLAG" == "0" ]; then
 			if [ "$INSTALL" == "1" ]; then
 				PROGNAME=`basename $MODULE`
 				PKGNAME=`ArchiveName $LFSSOURCE/$SRCPATH/$PROGNAME$PATTERN*.t*`
-				installpkg -i $DISTTARGET/$SRCPATH/$PKGNAME
-				if [ -f $DISTTARGET/$SRCPATH/$DEVPKGNAME ]; then
-					instalpkg -i $DISTTARGET/$SRCPATH/$DEVPKGNAME
-				fi
-				if [ -f $DISTTARGET/$SRCPATH/$MANPKGNAME ]; then
-					instalpkg -i $DISTTARGET/$SRCPATH/$MANPKGNAME
-				fi
+				installpkg -oi $DISTTARGET/$SRCPATH/$PKGNAME
 			fi
 			DEINSTALL=0
 			INSTALL=0