diff --git a/gas/ChangeLog b/gas/ChangeLog
index 371fca8175..ffc661ec5a 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,8 @@
+2017-06-30  Maciej W. Rozycki  <macro@imgtec.com>
+
+	* config/tc-mips.c (match_float_constant): Update description.
+	(match_operand): Likewise.
+
 2017-06-30  Andrew Bennett  <andrew.bennett@imgtec.com>
 	    Maciej W. Rozycki  <macro@imgtec.com>
 
diff --git a/gas/config/tc-mips.c b/gas/config/tc-mips.c
index e1e6b3237b..1d477a1134 100644
--- a/gas/config/tc-mips.c
+++ b/gas/config/tc-mips.c
@@ -5937,9 +5937,9 @@ match_tied_reg_operand (struct mips_arg_info *arg, unsigned int other_regno)
   return match_reg (arg, OP_REG_GP, &regno) && regno == other_regno;
 }
 
-/* Read a floating-point constant from S for LI.S or LI.D.  LENGTH is
-   the length of the value in bytes (4 for float, 8 for double) and
-   USING_GPRS says whether the destination is a GPR rather than an FPR.
+/* Try to match a floating-point constant from ARG for LI.S or LI.D.
+   LENGTH is the length of the value in bytes (4 for float, 8 for double)
+   and USING_GPRS says whether the destination is a GPR rather than an FPR.
 
    Return the constant in IMM and OFFSET as follows:
 
@@ -6133,8 +6133,8 @@ match_vu0_suffix_operand (struct mips_arg_info *arg,
   return TRUE;
 }
 
-/* S is the text seen for ARG.  Match it against OPERAND.  Return the end
-   of the argument text if the match is successful, otherwise return null.  */
+/* Try to match a token from ARG against OPERAND.  Consume the token
+   and return true on success, otherwise return false.  */
 
 static bfd_boolean
 match_operand (struct mips_arg_info *arg,