diff --git a/doc/docker/fpm/entrypoint.sh b/doc/docker/fpm/entrypoint.sh
index 2af20757f3..f574a06aa3 100755
--- a/doc/docker/fpm/entrypoint.sh
+++ b/doc/docker/fpm/entrypoint.sh
@@ -6,7 +6,7 @@ test -n "$EGW_APC_SHM_SIZE" && {
   grep "apc.shm_size" /etc/php/7.3/fpm/conf.d/20-apcu.ini >/dev/null && \
     sed -e "s/^;\?apc.shm_size.*/apc.shm_size=$EGW_APC_SHM_SIZE/g" \
       -i /etc/php/7.3/fpm/conf.d/20-apcu.ini || \
-    echo "apc.shm_size=$EGW_APC_SHM_SIZE" >> /etc/php/7.3/fpm/conf.d/20-apcu.ini \
+    echo "apc.shm_size=$EGW_APC_SHM_SIZE" >> /etc/php/7.3/fpm/conf.d/20-apcu.ini
 }
 
 # if EGW_SESSION_TIMEOUT is set in environment, propagate value to php.ini