diff --git a/configure.in b/configure.in
index 209c29252..09aea8f35 100644
--- a/configure.in
+++ b/configure.in
@@ -58,6 +58,9 @@ SAVE_CFLAGS="$CFLAGS"
 AC_PROG_CC([$($PG_CONFIG --cc)])
 CFLAGS="$SAVE_CFLAGS"
 
+# Add the Postgres PKGINCLUDEDIR to the include search path
+CPPFLAGS="$CPPFLAGS -I$($PG_CONFIG --pkgincludedir)"
+
 # check for a number of CFLAGS that make development easier
 
 # CITUSAC_PROG_CC_CFLAGS_OPT