diff --git a/tools/dump_syscall.c b/tools/dump_syscall.c
index 1bd04e5..7768326 100644
--- a/tools/dump_syscall.c
+++ b/tools/dump_syscall.c
@@ -551,7 +551,7 @@ int main (int argc, char *argv[])
 
     if (type & 0x10)
       syscall_name = get_hypercall_name (syscall);
-    else if (type & 0xFF0 == 0)
+    else if ((type & 0xFF0) == 0)
       syscall_name = get_syscall_name (syscall);
     else if (type & 0x100)
       syscall_name = NULL;