diff --git a/tests/docker/dockerfiles/debian-amd64.docker b/tests/docker/dockerfiles/debian-amd64.docker
index 47a30adbdb..954fcf9606 100644
--- a/tests/docker/dockerfiles/debian-amd64.docker
+++ b/tests/docker/dockerfiles/debian-amd64.docker
@@ -36,5 +36,7 @@ RUN git clone https://github.com/luigirizzo/netmap.git /usr/src/netmap
 RUN cd /usr/src/netmap/LINUX && ./configure --no-drivers --no-apps --kernel-dir=$(ls -d /usr/src/linux-headers-*-amd64) && make install
 ENV QEMU_CONFIGURE_OPTS --enable-netmap
 
+RUN ldconfig
+
 # gcrypt
 ENV QEMU_CONFIGURE_OPTS $QEMU_CONFIGURE_OPTS --enable-gcrypt