diff --git a/buster/x86/Dockerfile b/buster/x86/Dockerfile
index 2f61a136d59d55ec74f19e3a10f50ace2cb12306..d310b9a629d723a7f85df6501c176ae6df867190 100644
--- a/buster/x86/Dockerfile
+++ b/buster/x86/Dockerfile
@@ -18,6 +18,7 @@ RUN echo "deb http://deb.debian.org/debian buster-backports main" >/etc/apt/sour
 
 RUN curl https://packages.icinga.com/icinga.key | apt-key add - \
  && DIST=$(awk -F"[)(]+" '/VERSION=/ {print $2}' /etc/os-release) \
+ && DIST=buster \
  && echo "deb http://packages.icinga.com/debian icinga-${DIST} main" > /etc/apt/sources.list.d/${DIST}-icinga.list
 
 RUN git clone https://git.icinga.com/build-docker/scripts.git /usr/local/bin
diff --git a/buster/x86_64/Dockerfile b/buster/x86_64/Dockerfile
index 556e9cd280d5dbef54f846913827983d03dfba5d..45b91e402ac380da3e3194eaa78c4beb1c0293e1 100644
--- a/buster/x86_64/Dockerfile
+++ b/buster/x86_64/Dockerfile
@@ -18,6 +18,7 @@ RUN echo "deb http://deb.debian.org/debian buster-backports main" >/etc/apt/sour
 
 RUN curl https://packages.icinga.com/icinga.key | apt-key add - \
  && DIST=$(awk -F"[)(]+" '/VERSION=/ {print $2}' /etc/os-release) \
+ && DIST=buster \
  && echo "deb http://packages.icinga.com/debian icinga-${DIST} main" > /etc/apt/sources.list.d/${DIST}-icinga.list
 
 RUN git clone https://git.icinga.com/build-docker/scripts.git /usr/local/bin