diff --git a/src/session.c b/src/session.c
index a37bbc52..417255bb 100644
--- a/src/session.c
+++ b/src/session.c
@@ -371,6 +371,7 @@ static pid_t execCommand(WScreen *scr, char *command)
 	wtokensplit(command, &argv, &argc);
 
 	if (!argc) {
+		wfree(argv);
 		return 0;
 	}