diff --git a/tests/functional/repl.sh b/tests/functional/repl.sh
index aeff43d30..7023f2b8a 100755
--- a/tests/functional/repl.sh
+++ b/tests/functional/repl.sh
@@ -350,10 +350,9 @@ runRepl () {
   local testDirNoUnderscores
   testDirNoUnderscores="${testDir//_/}"
 
-  # TODO: pass arguments to nix repl; see lang.sh
   _NIX_TEST_RAW_MARKDOWN=1 \
   _NIX_TEST_REPL_ECHO=1 \
-  nix repl 2>&1 \
+  nix repl "$@" 2>&1 \
     | stripColors \
     | tr -d '\0' \
     | stripEmptyLinesBeforePrompt \
@@ -373,7 +372,12 @@ for test in $(cd "$testDir/repl"; echo *.in); do
     in="$testDir/repl/$test.in"
     actual="$TEST_ROOT/$test.actual"
     expected="$testDir/repl/$test.expected"
-    (cd "$testDir/repl"; set +x; runRepl 2>&1) < "$in" > "$actual" || {
+    declare -a flags=()
+    if test -e "$testDir/repl/$test.flags"; then
+      read -r -a flags < "$testDir/repl/$test.flags"
+    fi
+
+    (cd "$testDir/repl"; set +x; runRepl "${flags[@]}" 2>&1) < "$in" > "$actual" || {
         echo "FAIL: $test (exit code $?)" >&2
         badExitCode=1
     }
diff --git a/tests/functional/repl/doc-functor.expected b/tests/functional/repl/doc-functor.expected
index 503fb8073..8b86fe913 100644
--- a/tests/functional/repl/doc-functor.expected
+++ b/tests/functional/repl/doc-functor.expected
@@ -43,7 +43,7 @@ error:
              |                       ^
            91|   };
 
-       (19999 duplicate frames omitted)
+       (199 duplicate frames omitted)
 
        error: stack overflow; max-call-depth exceeded
        at /path/to/tests/functional/repl/doc-functor.nix:90:23:
@@ -56,7 +56,7 @@ nix-repl> :doc diverging
 error:
        … while partially calling '__functor' to retrieve documentation
 
-       (10000 duplicate frames omitted)
+       (100 duplicate frames omitted)
 
        … while calling '__functor'
          at /path/to/tests/functional/repl/doc-functor.nix:103:21:
diff --git a/tests/functional/repl/doc-functor.flags b/tests/functional/repl/doc-functor.flags
new file mode 100644
index 000000000..493088430
--- /dev/null
+++ b/tests/functional/repl/doc-functor.flags
@@ -0,0 +1 @@
+--max-call-depth 100