diff --git a/apps/Makefile b/apps/Makefile
index 12d5032459..ca7f86e7bf 100644
--- a/apps/Makefile
+++ b/apps/Makefile
@@ -103,7 +103,7 @@ app_curl.so: app_curl.o
 	$(CC) $(SOLINK) -o $@ ${CYGSOLINK} $< ${CYGSOLIB} $(CURLLIBS)
 
 app_sql_postgres.o: app_sql_postgres.c
-	$(CC) -pipe -I/usr/local/pgsql/include $(CFLAGS) -c -o app_sql_postgres.o app_sql_postgres.c
+	$(CC) -pipe -I$(CROSS_COMPILE_TARGET)/usr/local/pgsql/include -I$(CROSS_COMPILE_TARGET)/usr/include/postgresql $(CFLAGS) -c -o app_sql_postgres.o app_sql_postgres.c
 
 app_sql_postgres.so: app_sql_postgres.o
 	$(CC) $(SOLINK) -o $@ ${CYGSOLINK} $< ${CYGSOLIB} -L/usr/local/pgsql/lib -lpq