diff --git a/src/interfaces/ecpg/test/test1.pgc b/src/interfaces/ecpg/test/test1.pgc
index 8eb27c3a278..15c275a082d 100644
--- a/src/interfaces/ecpg/test/test1.pgc
+++ b/src/interfaces/ecpg/test/test1.pgc
@@ -1,3 +1,4 @@
+#include <stdlib.h>
 #include <string.h>
 
 /* just a test comment */ exec sql whenever sqlerror do PrintAndStop(msg);