diff --git a/src/optionstr.c b/src/optionstr.c
index 5fceb85..9b4464d 100644
--- a/src/optionstr.c
+++ b/src/optionstr.c
@@ -1945,9 +1945,13 @@
     char *
 did_set_keyprotocol(optset_T *args UNUSED)
 {
-    if (match_keyprotocol(NULL) == KEYPROTOCOL_FAIL)
+    char_u *term = T_NAME;
+    keyprot_T kpc = match_keyprotocol(term);
+    if (kpc == KEYPROTOCOL_FAIL)
 	return e_invalid_argument;
 
+    apply_keyprotocol(term, kpc);
+
     return NULL;
 }