diff --git a/src/interfaces/ecpg/test/test_thread.pgc b/src/interfaces/ecpg/test/test_thread.pgc
index 4908e40646..8d9eac2926 100644
--- a/src/interfaces/ecpg/test/test_thread.pgc
+++ b/src/interfaces/ecpg/test/test_thread.pgc
@@ -16,7 +16,7 @@ int	    iterations = 10;
 EXEC SQL END DECLARE SECTION;
 
 int
-main(int argc, char **argv)
+main(int argc, char *argv[])
 {
 	pthread_t	thread1,
 			thread2;