diff --git a/src/task-manager.c b/src/task-manager.c
index 67473dc..cba8a73 100644
--- a/src/task-manager.c
+++ b/src/task-manager.c
@@ -127,7 +127,7 @@ pretty_cmdline (gchar *cmdline, gchar *comm)
 			gchar *p = g_strstr_len (text, -1, comm);
 			if (p != NULL)
 			{
-				g_snprintf (text, g_utf8_strlen (text, -1), p);
+				g_snprintf (text, g_utf8_strlen (text, -1), "%s", p);
 			}
 		}
 	}