diff --git a/src/backend/storage/ipc/procarray.c b/src/backend/storage/ipc/procarray.c
index ea82882aa6d..bde2a60c023 100644
--- a/src/backend/storage/ipc/procarray.c
+++ b/src/backend/storage/ipc/procarray.c
@@ -2465,6 +2465,8 @@ MinimumActiveBackends(int min)
 		 * free list and are recycled. Its contents are nonsense in that case,
 		 * but that's acceptable for this function.
 		 */
+		if (pgprocno == -1)
+			continue;			/* do not count deleted entries */
 		if (proc == MyProc)
 			continue;			/* do not count myself */
 		if (pgxact->xid == InvalidTransactionId)