diff --git a/contrib/pg_walinspect/Makefile b/contrib/pg_walinspect/Makefile
index 960530e..85dcb3a 100644
--- a/contrib/pg_walinspect/Makefile
+++ b/contrib/pg_walinspect/Makefile
@@ -15,7 +15,6 @@ REGRESS_OPTS = --temp-config $(top_srcdir)/contrib/pg_walinspect/walinspect.conf
 
 # Disabled because these tests require "wal_level=replica", which
 # some installcheck users do not have (e.g. buildfarm clients).
-NO_INSTALLCHECK = 1
 
 ifdef USE_PGXS
 PG_CONFIG = pg_config
diff --git a/src/backend/access/transam/xlogreader.c b/src/backend/access/transam/xlogreader.c
index cf5db23..33d2c73 100644
--- a/src/backend/access/transam/xlogreader.c
+++ b/src/backend/access/transam/xlogreader.c
@@ -373,6 +373,9 @@ XLogNextRecord(XLogReaderState *state, char **errormsg)
 		 */
 		Assert(!XLogRecPtrIsInvalid(state->EndRecPtr));
 
+		if(!*errormsg)
+		  *errormsg = "decode_queue_head is null";
+		
 		return NULL;
 	}
 
diff --git a/src/backend/access/transam/xlogutils.c b/src/backend/access/transam/xlogutils.c
index 4257026..5ea59a3 100644
--- a/src/backend/access/transam/xlogutils.c
+++ b/src/backend/access/transam/xlogutils.c
@@ -951,6 +951,9 @@ read_local_xlog_page_guts(XLogReaderState *state, XLogRecPtr targetPagePtr,
 
 		if (state->currTLI == currTLI)
 		{
+		  elog(LOG, "considering wait for wal: loc %X/%X read_upto %X/%X wait_for_wal %d",
+		       LSN_FORMAT_ARGS(loc), LSN_FORMAT_ARGS(read_upto),
+		       wait_for_wal);
 
 			if (loc <= read_upto)
 				break;