diff --git a/extra/pciutils/build b/extra/pciutils/build
index c70e1395..1e2b7364 100755
--- a/extra/pciutils/build
+++ b/extra/pciutils/build
@@ -1,7 +1,7 @@
 #!/bin/sh -e
 
 # Avoid repeating environment variables.
-mk() (
+mk() {
     make \
         PREFIX=/usr \
         ZLIB=no \
@@ -10,7 +10,7 @@ mk() (
         MANDIR=/usr/share/man \
         SBINDIR=/usr/bin \
         "$@"
-)
+}
 
 mk all
 mk DESTDIR="$1" install install-lib