diff --git a/test/T140-excludes.sh b/test/T140-excludes.sh
index 352b3eb8..e9cc9cb0 100755
--- a/test/T140-excludes.sh
+++ b/test/T140-excludes.sh
@@ -21,7 +21,7 @@ generate_thread () {
     done
     notmuch new > /dev/null
     # We cannot retrieve the thread_id until after we have run notmuch new.
-    gen_thread_id=`notmuch search --output=threads id:${gen_thread_msg_id[0]}`
+    gen_thread_id=$(notmuch search --output=threads id:${gen_thread_msg_id[0]} 2>/dev/null)
 }
 
 #############################################
diff --git a/test/T380-atomicity.sh b/test/T380-atomicity.sh
index 45de2228..afe49d93 100755
--- a/test/T380-atomicity.sh
+++ b/test/T380-atomicity.sh
@@ -67,7 +67,7 @@ if test_require_external_prereq gdb; then
     ${TEST_GDB} -tty /dev/null -batch -x $NOTMUCH_SRCDIR/test/atomicity.py notmuch 1>gdb.out 2>&1
 
     # Get the final, golden output
-    notmuch search '*' > expected
+    notmuch search '*' 2>/dev/null > expected
 
     # Check output against golden output
     outcount=$(cat outcount)
diff --git a/test/T700-reindex.sh b/test/T700-reindex.sh
index f51130e8..52bba4d3 100755
--- a/test/T700-reindex.sh
+++ b/test/T700-reindex.sh
@@ -6,8 +6,8 @@ add_email_corpus
 
 notmuch tag +usertag1 '*'
 
-notmuch search '*' | notmuch_search_sanitize > initial-threads
-notmuch search --output=messages '*' > initial-message-ids
+notmuch search '*' 2>1 | notmuch_search_sanitize > initial-threads
+notmuch search --output=messages '*' 2>/dev/null > initial-message-ids
 notmuch dump > initial-dump
 
 test_begin_subtest 'reindex preserves threads'
diff --git a/test/T750-user-header.sh b/test/T750-user-header.sh
index 05f80885..03c43656 100755
--- a/test/T750-user-header.sh
+++ b/test/T750-user-header.sh
@@ -4,8 +4,8 @@ test_description='indexing user specified headers'
 
 add_email_corpus
 
-notmuch search '*' | notmuch_search_sanitize > initial-threads
-notmuch search --output=messages '*' > initial-message-ids
+notmuch search '*' 2>1 | notmuch_search_sanitize > initial-threads
+notmuch search --output=messages '*' 2>/dev/null > initial-message-ids
 notmuch dump > initial-dump
 
 test_begin_subtest "adding illegal prefix name, bad utf8"