diff --git a/Dockerfile.compute-node-combined b/Dockerfile.compute-node-combined
index 4bfa0d0e70..f2b8c74336 100644
--- a/Dockerfile.compute-node-combined
+++ b/Dockerfile.compute-node-combined
@@ -25,9 +25,10 @@ COPY "vendor/postgres-v14" /postgres-v14
 COPY "vendor/postgres-v15" /postgres-v15
 COPY "vendor/postgres-v16" /postgres-v16
 RUN for pg_version in v14 v15 v16; do \
-        install_dir="/postgres-$pg_version" ; \
+        install_dir="/postgres-$pg_version"; \
         cd "$install_dir"; \
-        export CONFIGURE_CMD="./configure CFLAGS='-O2 -g3' --enable-debug --with-openssl --with-uuid=ossp \
+        prefix="/usr/local/pgsql-${pg_version}"; \
+        export CONFIGURE_CMD="./configure --prefix ${prefix} CFLAGS='-O2 -g3' --enable-debug --with-openssl --with-uuid=ossp \
         --with-icu --with-libxml --with-libxslt --with-lz4" && \
         if [ "${pg_version}" != "v14" ]; then \
             # zstd is available only from PG15
@@ -59,7 +60,7 @@ RUN for pg_version in v14 v15 v16; do \
         # so we do it here.
         old_list="pg_stat_statements--1.0--1.1.sql pg_stat_statements--1.1--1.2.sql pg_stat_statements--1.2--1.3.sql pg_stat_statements--1.3--1.4.sql pg_stat_statements--1.4--1.5.sql pg_stat_statements--1.4.sql pg_stat_statements--1.5--1.6.sql"; \
         # the first loop is for pg_stat_statement extension version <= 1.6
-        for file in /usr/local/pgsql/share/extension/pg_stat_statements--*.sql; do \
+        for file in $prefix/share/extension/pg_stat_statements--*.sql; do \
             filename=$(basename "$file"); \
             if echo "$old_list" | grep -q -F "$filename"; then \
                 echo 'GRANT EXECUTE ON FUNCTION pg_stat_statements_reset() TO neon_superuser;' >> $file; \
@@ -67,7 +68,7 @@ RUN for pg_version in v14 v15 v16; do \
         done; \
         # the second loop is for pg_stat_statement extension versions >= 1.7,
         # where pg_stat_statement_reset() got 3 additional arguments
-        for file in /usr/local/pgsql/share/extension/pg_stat_statements--*.sql; do \
+        for file in $prefix/share/extension/pg_stat_statements--*.sql; do \
             filename=$(basename "$file"); \
             if ! echo "$old_list" | grep -q -F "$filename"; then \
                 echo 'GRANT EXECUTE ON FUNCTION pg_stat_statements_reset(Oid, Oid, bigint) TO neon_superuser;' >> $file; \