diff --git a/src/bin/pg_basebackup/Makefile b/src/bin/pg_basebackup/Makefile
index 78d96c649c1..ada3a5a5783 100644
--- a/src/bin/pg_basebackup/Makefile
+++ b/src/bin/pg_basebackup/Makefile
@@ -35,6 +35,9 @@ OBJS = \
 	streamutil.o \
 	walmethods.o
 
+# If you add or remove files here, also update Mkvcbuild.pm, which only knows
+# about OBJS, not BBOBJS, and thus has to be manually updated to stay in sync
+# with this list.
 BBOBJS = \
 	pg_basebackup.o \
 	bbstreamer_file.o \
diff --git a/src/tools/msvc/Mkvcbuild.pm b/src/tools/msvc/Mkvcbuild.pm
index ec3546d0c0f..a310bcb28c9 100644
--- a/src/tools/msvc/Mkvcbuild.pm
+++ b/src/tools/msvc/Mkvcbuild.pm
@@ -377,6 +377,7 @@ sub mkvcbuild
 	# This list of files has to match BBOBJS in pg_basebackup's Makefile.
 	$pgbasebackup->AddFile('src/bin/pg_basebackup/pg_basebackup.c');
 	$pgbasebackup->AddFile('src/bin/pg_basebackup/bbstreamer_file.c');
+	$pgbasebackup->AddFile('src/bin/pg_basebackup/bbstreamer_gzip.c');
 	$pgbasebackup->AddFile('src/bin/pg_basebackup/bbstreamer_inject.c');
 	$pgbasebackup->AddFile('src/bin/pg_basebackup/bbstreamer_tar.c');
 	$pgbasebackup->AddLibrary('ws2_32.lib');