diff --git a/docker/Dockerfile_ubuntu_18.04 b/docker/Dockerfile_ubuntu_18.04
index ea1d5c1fb5c7db5be63e9802f7660b5aa6346fe6..83594007ad6cccdaad7e110a0a9aa6d65091a045 100644
--- a/docker/Dockerfile_ubuntu_18.04
+++ b/docker/Dockerfile_ubuntu_18.04
@@ -44,7 +44,6 @@ RUN apt-get update && \
         libavdevice-dev \
         libopus-dev \
         libudev-dev \
-        libgsm1-dev \
         libjsoncpp-dev \
         libmsgpack-dev \
         libnatpmp-dev \