diff --git a/c/postgresql_demo.c b/c/postgresql_demo.c
index f5cabb3..4425d1e 100644
--- a/c/postgresql_demo.c
+++ b/c/postgresql_demo.c
@@ -1,5 +1,5 @@
 #include <stdio.h>
-#include <libpq-fe.h>
+#include <postgresql/libpq-fe.h>
 
 int main(int argc, char *argv[]) {
 	PGconn *conn;