diff --git a/lib/igt_aux.h b/lib/igt_aux.h
index 415614b4..9b42918f 100644
--- a/lib/igt_aux.h
+++ b/lib/igt_aux.h
@@ -85,6 +85,6 @@ bool intel_check_memory(uint32_t count, uint32_t size, unsigned mode);
 
 
 #define min(a, b) ((a) < (b) ? (a) : (b))
-#define max(a, b) ((a) < (b) ? (a) : (b))
+#define max(a, b) ((a) > (b) ? (a) : (b))
 
 #endif /* IGT_AUX_H */