diff --git a/performance.c b/performance.c
index c084562bf2..73edbf14ac 100644
--- a/performance.c
+++ b/performance.c
@@ -36,9 +36,11 @@
 #include <time.h>
 #endif
 
-#ifdef __BLACKBERRY_QNX__
+#ifdef __QNX__
+#ifndef CLOCK_MONOTONIC
 #define CLOCK_MONOTONIC 2
 #endif
+#endif
 
 #if defined(__PSL1GHT__)
 #include <sys/time.h>