--- old/src/cpu/x86/vm/vm_version_x86.cpp	2017-07-03 08:27:39.000000000 -0700
+++ new/src/cpu/x86/vm/vm_version_x86.cpp	2017-07-03 08:27:39.000000000 -0700
@@ -1380,7 +1380,7 @@
 #endif
     log->cr();
     log->print("Allocation");
-    if (AllocatePrefetchStyle <= 0 || UseSSE == 0 && !supports_3dnow_prefetch()) {
+    if (AllocatePrefetchStyle <= 0 || (UseSSE == 0 && !supports_3dnow_prefetch())) {
       log->print_cr(": no prefetching");
     } else {
       log->print(" prefetching: ");