diff --git a/qga/commands-posix.c b/qga/commands-posix.c
index 675f4b4c667987f78a62b29259de12bb05ee36d6..fc4fc727f7850014f12e2b8532bea85c62201b6d 100644
--- a/qga/commands-posix.c
+++ b/qga/commands-posix.c
@@ -2454,7 +2454,7 @@ GList *ga_command_blacklist_init(GList *blacklist)
         char **p = (char **)list;
 
         while (*p) {
-            blacklist = g_list_append(blacklist, *p++);
+            blacklist = g_list_append(blacklist, g_strdup(*p++));
         }
     }
 #endif
@@ -2468,13 +2468,13 @@ GList *ga_command_blacklist_init(GList *blacklist)
         char **p = (char **)list;
 
         while (*p) {
-            blacklist = g_list_append(blacklist, *p++);
+            blacklist = g_list_append(blacklist, g_strdup(*p++));
         }
     }
 #endif
 
 #if !defined(CONFIG_FSTRIM)
-    blacklist = g_list_append(blacklist, (char *)"guest-fstrim");
+    blacklist = g_list_append(blacklist, g_strdup("guest-fstrim"));
 #endif
 
     return blacklist;
diff --git a/qga/commands-win32.c b/qga/commands-win32.c
index a7822d5ff78daa4279b1b9b988ea9bc1d8fbbf68..1152c46280edfca130e365dbd016840f1394a260 100644
--- a/qga/commands-win32.c
+++ b/qga/commands-win32.c
@@ -1233,7 +1233,7 @@ GList *ga_command_blacklist_init(GList *blacklist)
     char **p = (char **)list_unsupported;
 
     while (*p) {
-        blacklist = g_list_append(blacklist, *p++);
+        blacklist = g_list_append(blacklist, g_strdup(*p++));
     }
 
     if (!vss_init(true)) {
@@ -1244,7 +1244,7 @@ GList *ga_command_blacklist_init(GList *blacklist)
         p = (char **)list;
 
         while (*p) {
-            blacklist = g_list_append(blacklist, *p++);
+            blacklist = g_list_append(blacklist, g_strdup(*p++));
         }
     }
 
diff --git a/qga/main.c b/qga/main.c
index e75022c44f577cfe21b4523f01e9c1254536d60f..a7df6c83b14fb25530cb03661a22f934dbee9c04 100644
--- a/qga/main.c
+++ b/qga/main.c
@@ -921,22 +921,17 @@ static void ga_print_cmd(QmpCommand *cmd, void *opaque)
     printf("%s\n", qmp_command_name(cmd));
 }
 
-static GList *split_list(gchar *str, const gchar separator)
+static GList *split_list(const gchar *str, const gchar *delim)
 {
     GList *list = NULL;
-    int i, j, len;
+    int i;
+    gchar **strv;
 
-    for (j = 0, i = 0, len = strlen(str); i < len; i++) {
-        if (str[i] == separator) {
-            str[i] = 0;
-            list = g_list_append(list, &str[j]);
-            j = i + 1;
-        }
-    }
-
-    if (j < i) {
-        list = g_list_append(list, &str[j]);
+    strv = g_strsplit(str, delim, -1);
+    for (i = 0; strv[i]; i++) {
+        list = g_list_prepend(list, strv[i]);
     }
+    g_free(strv);
 
     return list;
 }
@@ -1021,7 +1016,7 @@ int main(int argc, char **argv)
                 qmp_for_each_command(ga_print_cmd, NULL);
                 exit(EXIT_SUCCESS);
             }
-            blacklist = g_list_concat(blacklist, split_list(optarg, ','));
+            blacklist = g_list_concat(blacklist, split_list(optarg, ","));
             break;
         }
 #ifdef _WIN32
@@ -1201,6 +1196,7 @@ int main(int argc, char **argv)
     }
 #endif
 
+    g_list_free_full(ga_state->blacklist, g_free);
     ga_command_state_cleanup_all(ga_state->command_state);
     ga_channel_free(ga_state->channel);