diff --git a/src/test/modules/libpq_pipeline/libpq_pipeline.c b/src/test/modules/libpq_pipeline/libpq_pipeline.c
index 95ffaae9f6..8ca50df753 100644
--- a/src/test/modules/libpq_pipeline/libpq_pipeline.c
+++ b/src/test/modules/libpq_pipeline/libpq_pipeline.c
@@ -35,8 +35,8 @@ const char *const progname = "libpq_pipeline";
 char	   *tracefile = NULL;	/* path to PQtrace() file */
 
 
-#define DEBUG
-#ifdef DEBUG
+#define DEBUG_OUTPUT
+#ifdef DEBUG_OUTPUT
 #define	pg_debug(...)  do { fprintf(stderr, __VA_ARGS__); } while (0)
 #else
 #define pg_debug(...)