diff --git a/tcg/tcg.h b/tcg/tcg.h
index 1ffeca6e6f..cb4911cde6 100644
--- a/tcg/tcg.h
+++ b/tcg/tcg.h
@@ -174,8 +174,8 @@ typedef int TCGv_i64;
 #define TCG_CALL_TYPE_REGPARM_1 0x0001 /* i386 style regparm call (1 reg) */
 #define TCG_CALL_TYPE_REGPARM_2 0x0002 /* i386 style regparm call (2 regs) */
 #define TCG_CALL_TYPE_REGPARM   0x0003 /* i386 style regparm call (3 regs) */
-/* A pure function only reads its arguments and globals variables and
-   cannot raise exceptions. Hence a call to a pure function can be
+/* A pure function only reads its arguments and TCG globals variables
+   and cannot raise exceptions. Hence a call to a pure function can be
    safely suppressed if the return value is not used. */
 #define TCG_CALL_PURE           0x0010