diff --git a/lib/distributions.sh b/lib/distributions.sh
index 84303d9f68..bb4eb6ec2e 100644
--- a/lib/distributions.sh
+++ b/lib/distributions.sh
@@ -437,8 +437,8 @@ install_distribution_specific()
 			# rc.local is not existing but one might need it
 			install_rclocal
 			# fix missing versioning
-			[[ $(grep -L "VERSION_ID" "${SDCARD}"/etc/os-release) ]] && echo 'VERSION_ID="11"' >> "${SDCARD}"/etc/os-release
-			[[ $(grep -L "VERSION" "${SDCARD}"/etc/os-release) ]] && echo 'VERSION="11 (bullseye)"' >> "${SDCARD}"/etc/os-release
+			[[ $(grep -L "VERSION_ID=" "${SDCARD}"/etc/os-release) ]] && echo 'VERSION_ID="11"' >> "${SDCARD}"/etc/os-release
+			[[ $(grep -L "VERSION=" "${SDCARD}"/etc/os-release) ]] && echo 'VERSION="11 (bullseye)"' >> "${SDCARD}"/etc/os-release
 
 			# remove security updates repository since it does not exists yet
 			sed '/security/ d' -i "${SDCARD}"/etc/apt/sources.list