diff --git a/NEWS.md b/NEWS.md
index 3f088180f..fc0c55b27 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,9 +1,11 @@
-# CHANGES IN GGIR VERSION 3.3-?
+# CHANGES IN GGIR VERSION 3.3-3
 
 - Part 2: Step/cadence expanded with a variety of output variables #1398. Credits for funding this enhancement: Ben Maylor and Alex Rowlands.
 
 - Part 1: Fix bug that caused GENEAsleep binary data to no longer to be recognised as such since the introduction of functionality for Parmay binary data. #1432
 
+- Part 4: Fix bug causing the error about missing object defaultGuiderCorrected #1438
+
 # CHANGES IN GGIR VERSION 3.3-2
 
 - Part 1: Fractional sampling rate for GENEActiv now automatically resampled to rounded sampling rate to ease and avoid ambiguity in epoch level aggregation #1408.
diff --git a/R/g.part4.R b/R/g.part4.R
index 3611e4e82..42123f135 100644
--- a/R/g.part4.R
+++ b/R/g.part4.R
@@ -346,6 +346,7 @@ g.part4 = function(datadir = c(), metadatadir = c(), f0 = f0, f1 = f1,
               defaultGuiderWake = 31
             }
             defaultGuider = guider
+            defaultGuiderCorrected = NULL
           } else if ((length(params_sleep[["def.noc.sleep"]]) == 1 ||
                       length(params_sleep[["loglocation"]]) != 0) &&
                      length(SPTE_start) != 0) {