diff --git a/catgirl.1 b/catgirl.1
index abb9dd7..7b0b308 100644
--- a/catgirl.1
+++ b/catgirl.1
@@ -53,6 +53,8 @@ The arguments are as follows:
 .It Fl C Ar util , Cm copy = Ar util
 Set the utility used by
 .Ic /copy .
+Use more than once to add arguments to
+.Ar util .
 The default is the first available of
 .Xr pbcopy 1 ,
 .Xr wl-copy 1 ,
@@ -66,6 +68,8 @@ the nick color hash function.
 .It Fl O Ar util , Cm open = Ar util
 Set the utility used by
 .Ic /open .
+Use more than once to add arguments to
+.Ar util .
 The default is the first available of
 .Xr open 1 ,
 .Xr xdg-open 1 .
diff --git a/chat.c b/chat.c
index 14a02cb..2c41d43 100644
--- a/chat.c
+++ b/chat.c
@@ -120,9 +120,9 @@ int main(int argc, char *argv[]) {
 	while (0 < (opt = getopt_config(argc, argv, Opts, LongOpts, NULL))) {
 		switch (opt) {
 			break; case '!': insecure = true;
-			break; case 'C': urlCopyUtil = optarg;
+			break; case 'C': utilPush(&urlCopyUtil, optarg);
 			break; case 'H': hashInit = strtoul(optarg, NULL, 0);
-			break; case 'O': urlOpenUtil = optarg;
+			break; case 'O': utilPush(&urlOpenUtil, optarg);
 			break; case 'R': self.restricted = true;
 			break; case 'a': sasl = true; self.plain = optarg;
 			break; case 'c': cert = optarg;
diff --git a/chat.h b/chat.h
index 39be36e..4e9a230 100644
--- a/chat.h
+++ b/chat.h
@@ -194,8 +194,22 @@ void completeClear(size_t id);
 size_t completeID(const char *str);
 enum Color completeColor(size_t id, const char *str);
 
-extern const char *urlOpenUtil;
-extern const char *urlCopyUtil;
+enum { UtilCap = 16 };
+struct Util {
+	size_t argc;
+	const char *argv[UtilCap];
+};
+
+static inline void utilPush(struct Util *util, const char *arg) {
+	if (1 + util->argc < UtilCap) {
+		util->argv[util->argc++] = arg;
+	} else {
+		errx(EX_CONFIG, "too many utility arguments");
+	}
+}
+
+extern struct Util urlOpenUtil;
+extern struct Util urlCopyUtil;
 void urlScan(size_t id, const char *nick, const char *mesg);
 void urlOpenCount(size_t id, size_t count);
 void urlOpenMatch(size_t id, const char *str);
diff --git a/url.c b/url.c
index 1ccc206..bf3d948 100644
--- a/url.c
+++ b/url.c
@@ -95,8 +95,11 @@ void urlScan(size_t id, const char *nick, const char *mesg) {
 	}
 }
 
-const char *urlOpenUtil;
-static const char *OpenUtils[] = { "open", "xdg-open" };
+struct Util urlOpenUtil;
+static const struct Util OpenUtils[] = {
+	{ 1, { "open" } },
+	{ 1, { "xdg-open" } },
+};
 
 static void urlOpen(const char *url) {
 	pid_t pid = fork();
@@ -106,15 +109,19 @@ static void urlOpen(const char *url) {
 	close(STDIN_FILENO);
 	dup2(procPipe[1], STDOUT_FILENO);
 	dup2(procPipe[1], STDERR_FILENO);
-	if (urlOpenUtil) {
-		execlp(urlOpenUtil, urlOpenUtil, url, NULL);
-		warn("%s", urlOpenUtil);
+	if (urlOpenUtil.argc) {
+		struct Util util = urlOpenUtil;
+		utilPush(&util, url);
+		execvp(util.argv[0], (char *const *)util.argv);
+		warn("%s", util.argv[0]);
 		_exit(EX_CONFIG);
 	}
 	for (size_t i = 0; i < ARRAY_LEN(OpenUtils); ++i) {
-		execlp(OpenUtils[i], OpenUtils[i], url, NULL);
+		struct Util util = OpenUtils[i];
+		utilPush(&util, url);
+		execvp(util.argv[0], (char *const *)util.argv);
 		if (errno != ENOENT) {
-			warn("%s", OpenUtils[i]);
+			warn("%s", util.argv[0]);
 			_exit(EX_CONFIG);
 		}
 	}
@@ -122,8 +129,13 @@ static void urlOpen(const char *url) {
 	_exit(EX_CONFIG);
 }
 
-const char *urlCopyUtil;
-static const char *CopyUtils[] = { "pbcopy", "wl-copy", "xclip", "xsel" };
+struct Util urlCopyUtil;
+static const struct Util CopyUtils[] = {
+	{ 1, { "pbcopy" } },
+	{ 1, { "wl-copy" } },
+	{ 3, { "xclip", "-selection", "clipboard" } },
+	{ 3, { "xsel", "-i", "-b" } },
+};
 
 static void urlCopy(const char *url) {
 	int rw[2];
@@ -147,15 +159,15 @@ static void urlCopy(const char *url) {
 	dup2(procPipe[1], STDOUT_FILENO);
 	dup2(procPipe[1], STDERR_FILENO);
 	close(rw[0]);
-	if (urlCopyUtil) {
-		execlp(urlCopyUtil, urlCopyUtil, NULL);
-		warn("%s", urlCopyUtil);
+	if (urlCopyUtil.argc) {
+		execvp(urlCopyUtil.argv[0], (char *const *)urlCopyUtil.argv);
+		warn("%s", urlCopyUtil.argv[0]);
 		_exit(EX_CONFIG);
 	}
 	for (size_t i = 0; i < ARRAY_LEN(CopyUtils); ++i) {
-		execlp(CopyUtils[i], CopyUtils[i], NULL);
+		execvp(CopyUtils[i].argv[0], (char *const *)CopyUtils[i].argv);
 		if (errno != ENOENT) {
-			warn("%s", CopyUtils[i]);
+			warn("%s", CopyUtils[i].argv[0]);
 			_exit(EX_CONFIG);
 		}
 	}