diff --git a/gcc/global.c b/gcc/global.c
index b36cb1b97ab..6bba5684402 100644
--- a/gcc/global.c
+++ b/gcc/global.c
@@ -159,7 +159,7 @@ do {									\
    mirror_conflicts has been run.  */
 #define EXECUTE_IF_CONFLICT(IN_ALLOCNO, OUT_ALLOCNO, CODE)\
   EXECUTE_IF_SET_IN_ALLOCNO_SET (conflicts + (IN_ALLOCNO) * allocno_row_words,\
-				 OUT_ALLOCNO, CODE)
+				 OUT_ALLOCNO, (CODE))
 
 /* Set of hard regs currently live (during scan of all insns).  */