diff --git a/guac-install.sh b/guac-install.sh
index f0306dc..2f02aa8 100755
--- a/guac-install.sh
+++ b/guac-install.sh
@@ -235,7 +235,7 @@ if [[ "${NAME}" == "Ubuntu" ]] || [[ "${NAME}" == "Linux Mint" ]]; then
     fi
 elif [[ "${NAME}" == *"Debian"* ]] || [[ "${NAME}" == *"Raspbian GNU/Linux"* ]] || [[ "${NAME}" == *"Kali GNU/Linux"* ]] || [[ "${NAME}" == "LMDE" ]]; then
     JPEGTURBO="libjpeg62-turbo-dev"
-    if [[ "${PRETTY_NAME}" == *"stretch"* ]] || [[ "${PRETTY_NAME}" == *"buster"* ]] || [[ "${PRETTY_NAME}" == *"Kali GNU/Linux Rolling"* ]] || [[ "${NAME}" == "LMDE" ]]; then
+    if [[ "${PRETTY_NAME}" == *"bullseye"* ]] || [[ "${PRETTY_NAME}" == *"stretch"* ]] || [[ "${PRETTY_NAME}" == *"buster"* ]] || [[ "${PRETTY_NAME}" == *"Kali GNU/Linux Rolling"* ]] || [[ "${NAME}" == "LMDE" ]]; then
         LIBPNG="libpng-dev"
     else
         LIBPNG="libpng12-dev"