diff --git a/common/JackClient.cpp b/common/JackClient.cpp
index b03dbc25..b8303ab0 100644
--- a/common/JackClient.cpp
+++ b/common/JackClient.cpp
@@ -34,6 +34,15 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 
 using namespace std;
 
+#ifdef __QNXNTO__
+void __attribute__((constructor)) init_output_for_percent_s_NULL_for_clients();
+void init_output_for_percent_s_NULL_for_clients()
+{
+    extern const char *output_for_percent_s_NULL;
+    output_for_percent_s_NULL = "(null)";
+}
+#endif
+
 namespace Jack
 {