diff --git a/sapi/src/builder/library/pgsql.php b/sapi/src/builder/library/pgsql.php
index 71d763690..70ef9851d 100644
--- a/sapi/src/builder/library/pgsql.php
+++ b/sapi/src/builder/library/pgsql.php
@@ -55,6 +55,7 @@
             make -C src/bin/pg_config install
 
             make -C src/include install
+            make -C src/include/libpq install
 
             # make -C  src/interfaces install