diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index 4722846c75e..1deb7a07ee4 100644
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,3 +1,12 @@
+2020-11-18  Simon Marchi  <simon.marchi@polymtl.ca>
+
+	* gdb.mi/mi-nonstop-exit.exp: Enable non-stop through GDBFLAGS.
+	* gdb.mi/mi-ns-stale-regcache.exp: Likewise.
+	* gdb.mi/mi-nsintrall.exp: Likewise.
+	* gdb.mi/mi-nsmoribund.exp: Likewise.
+	* gdb.mi/mi-nsthrexec.exp: Likewise.
+	* gdb.mi/mi-watch-nonstop.exp: Likewise.
+
 2020-11-18  Simon Marchi  <simon.marchi@polymtl.ca>
 
 	* lib/mi-support.exp (mi_run_cmd_full): Use unresovled instead
diff --git a/gdb/testsuite/gdb.mi/mi-nonstop-exit.exp b/gdb/testsuite/gdb.mi/mi-nonstop-exit.exp
index 3e58754c9a4..566b11e3c14 100644
--- a/gdb/testsuite/gdb.mi/mi-nonstop-exit.exp
+++ b/gdb/testsuite/gdb.mi/mi-nonstop-exit.exp
@@ -31,9 +31,11 @@ if {[gdb_compile_pthreads "$srcdir/$subdir/$srcfile" $binfile executable $option
     return -1
 }
 
-mi_clean_restart $binfile
+save_vars { GDBFLAGS } {
+    append GDBFLAGS " -ex \"set non-stop on\""
+    mi_clean_restart $binfile
+}
 
-mi_gdb_test "-gdb-set non-stop 1" ".*"
 mi_gdb_test "-gdb-set mi-async 1" ".*"
 mi_detect_async
 
diff --git a/gdb/testsuite/gdb.mi/mi-ns-stale-regcache.exp b/gdb/testsuite/gdb.mi/mi-ns-stale-regcache.exp
index ebbdb4186a4..fe0bd4850ec 100644
--- a/gdb/testsuite/gdb.mi/mi-ns-stale-regcache.exp
+++ b/gdb/testsuite/gdb.mi/mi-ns-stale-regcache.exp
@@ -44,9 +44,11 @@ if {[gdb_compile "$srcdir/$subdir/$srcfile" \
     return -1
 }
 
-mi_clean_restart $binfile
+save_vars { GDBFLAGS } {
+    append GDBFLAGS " -ex \"set non-stop on\""
+    mi_clean_restart $binfile
+}
 
-mi_gdb_test "-gdb-set non-stop 1" ".*"
 mi_gdb_test "-gdb-set mi-async 1" ".*"
 mi_detect_async
 
diff --git a/gdb/testsuite/gdb.mi/mi-nsintrall.exp b/gdb/testsuite/gdb.mi/mi-nsintrall.exp
index aa0e81c84ca..e76a9ac0abc 100644
--- a/gdb/testsuite/gdb.mi/mi-nsintrall.exp
+++ b/gdb/testsuite/gdb.mi/mi-nsintrall.exp
@@ -31,9 +31,11 @@ if {[gdb_compile_pthreads "$srcdir/$subdir/$srcfile" $binfile executable $option
     return -1
 }
 
-mi_clean_restart $binfile
+save_vars { GDBFLAGS } {
+    append GDBFLAGS " -ex \"set non-stop on\""
+    mi_clean_restart $binfile
+}
 
-mi_gdb_test "-gdb-set non-stop 1" ".*"
 mi_gdb_test "-gdb-set mi-async 1" ".*"
 mi_detect_async
 
diff --git a/gdb/testsuite/gdb.mi/mi-nsmoribund.exp b/gdb/testsuite/gdb.mi/mi-nsmoribund.exp
index 3e99b5f0c6f..73f1be5eea1 100644
--- a/gdb/testsuite/gdb.mi/mi-nsmoribund.exp
+++ b/gdb/testsuite/gdb.mi/mi-nsmoribund.exp
@@ -31,9 +31,11 @@ if {[gdb_compile_pthreads "$srcdir/$subdir/$srcfile" $binfile executable $option
     return -1
 }
 
-mi_clean_restart $binfile
+save_vars { GDBFLAGS } {
+    append GDBFLAGS " -ex \"set non-stop on\""
+    mi_clean_restart $binfile
+}
 
-mi_gdb_test "-gdb-set non-stop 1" ".*"
 mi_gdb_test "-gdb-set mi-async 1" ".*"
 mi_detect_async
 
diff --git a/gdb/testsuite/gdb.mi/mi-nsthrexec.exp b/gdb/testsuite/gdb.mi/mi-nsthrexec.exp
index 6f4800aa912..da986394621 100644
--- a/gdb/testsuite/gdb.mi/mi-nsthrexec.exp
+++ b/gdb/testsuite/gdb.mi/mi-nsthrexec.exp
@@ -36,9 +36,11 @@ if {[gdb_compile_pthreads "$srcdir/$subdir/$srcfile" $binfile executable $option
     return -1
 }
 
-mi_clean_restart $binfile
+save_vars { GDBFLAGS } {
+    append GDBFLAGS " -ex \"set non-stop on\""
+    mi_clean_restart $binfile
+}
 
-mi_gdb_test "-gdb-set non-stop 1" ".*"
 mi_gdb_test "-gdb-set mi-async 1" ".*"
 mi_detect_async
 
diff --git a/gdb/testsuite/gdb.mi/mi-watch-nonstop.exp b/gdb/testsuite/gdb.mi/mi-watch-nonstop.exp
index 6b56f384239..d887fe515cb 100644
--- a/gdb/testsuite/gdb.mi/mi-watch-nonstop.exp
+++ b/gdb/testsuite/gdb.mi/mi-watch-nonstop.exp
@@ -43,9 +43,11 @@ if {[gdb_compile "$srcdir/$subdir/$srcfile" $binfile executable {debug}] != "" }
     return -1
 }
 
-mi_clean_restart $binfile
+save_vars { GDBFLAGS } {
+    append GDBFLAGS " -ex \"set non-stop on\""
+    mi_clean_restart $binfile
+}
 
-mi_gdb_test "-gdb-set non-stop 1" ".*"
 mi_gdb_test "-gdb-set mi-async 1" ".*"
 mi_detect_async