diff --git a/Dockerfile b/Dockerfile
index f548170..530ca7d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -118,17 +118,7 @@ RUN set -e; \
     # Provide a temporary pkg-config stub for libtalerutil so configure can proceed when building from source tarballs \
     if [ ! -f /usr/lib/pkgconfig/libtalerutil.pc ]; then \
       mkdir -p /usr/lib/pkgconfig; \
-      cat > /usr/lib/pkgconfig/libtalerutil.pc <<'EOF'
-prefix=/usr
-exec_prefix=${prefix}
-libdir=${exec_prefix}/lib
-includedir=${prefix}/include
-Name: libtalerutil
-Description: Temporary stub for libtalerutil (will be replaced by build)
-Version: 1.2.1
-Libs: -L${libdir} -ltalerutil -lgnunetutil
-Cflags: -I${includedir}
-EOF
+      printf "prefix=/usr\nexec_prefix=\${prefix}\nlibdir=\${exec_prefix}/lib\nincludedir=\${prefix}/include\nName: libtalerutil\nDescription: Temporary stub for libtalerutil (will be replaced by build)\nVersion: 1.2.1\nLibs: -L\${libdir} -ltalerutil -lgnunetutil\nCflags: -I\${includedir}\n" > /usr/lib/pkgconfig/libtalerutil.pc; \
     fi; \
     cd "${EXCHANGE_DIR}" && env GNUNET_PREFIX=/usr GIT_CONFIG_NOSYSTEM=1 GIT_DIR= GIT_WORK_TREE=. ./configure --prefix=/usr && make -j$(nproc) && make install; \
     ldconfig; \