diff --git a/scripts/subinstallers/docker_raspbian.sh b/scripts/subinstallers/docker_raspbian.sh
index 29c1350..d4f7405 100755
--- a/scripts/subinstallers/docker_raspbian.sh
+++ b/scripts/subinstallers/docker_raspbian.sh
@@ -30,7 +30,7 @@ compare_version() {
 
 LIBSECCOMP2_VERSION=$(sudo -E apt-cache policy libseccomp2 | egrep ^\ *Inst | awk '{print $2}')
 
-if [ compare_version "$LIBSECCOMP2_VERSION" "<" "2.5.1-1" ]; then
+if [ $(compare_version "$LIBSECCOMP2_VERSION" "<" "2.5.1-1") -eq 0 ]; then
     # this is dumb but the raspbian repo managers aren't impressive
     pushd .
     cd /tmp