diff --git a/util/crossgcc/buildgcc b/util/crossgcc/buildgcc
index f59b225..590e1f8 100755
--- a/util/crossgcc/buildgcc
+++ b/util/crossgcc/buildgcc
@@ -109,7 +109,7 @@
 
 please_install()
 {
-	test -r /etc/os-release && source /etc/os-release
+	test -r /etc/os-release && . /etc/os-release
 	case "$ID_LIKE" in
 	debian) solution="sudo apt-get install $1" ;;
 	suse) solution="sudo zypper install $1" ;;