diff --git a/Dockerfile b/Dockerfile
index 271709a..e4a94f5 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -116,6 +116,7 @@ RUN set -e; \
       fi; \
     fi; \
     cd "${EXCHANGE_DIR}" && env GNUNET_PREFIX=/usr GIT_CONFIG_NOSYSTEM=1 GIT_DIR= GIT_WORK_TREE=. ./configure --prefix=/usr && make -j$(nproc) && make install; \
+    ldconfig; \
     # Merchant
     MERCHANT_DIR=""; MERCHANT_TAR=0; \
     LOCAL_TARBALL="$(find /vendor -maxdepth 1 \( -name 'taler-merchant*.tar.gz' -o -name 'merchant*.tar.gz' \) | head -1)"; \
@@ -160,7 +161,7 @@ RUN set -e; \
         echo "Skipping bootstrap for Merchant (configure present)"; \
       fi; \
     fi; \
-    cd "${MERCHANT_DIR}" && env GNUNET_PREFIX=/usr GIT_CONFIG_NOSYSTEM=1 GIT_DIR= GIT_WORK_TREE=. ./configure --prefix=/usr && make -j$(nproc) && make install
+    cd "${MERCHANT_DIR}" && env GNUNET_PREFIX=/usr PKG_CONFIG_PATH=/usr/lib/x86_64-linux-gnu/pkgconfig:/usr/lib/pkgconfig GIT_CONFIG_NOSYSTEM=1 GIT_DIR= GIT_WORK_TREE=. ./configure --prefix=/usr && make -j$(nproc) && make install
 
 # LibEuFin (Bank)
 RUN set -e; \