diff --git a/libgfortran/ChangeLog b/libgfortran/ChangeLog
index 74e36acd1d9..ac925cc8dc4 100644
--- a/libgfortran/ChangeLog
+++ b/libgfortran/ChangeLog
@@ -1,3 +1,9 @@
+2019-12-01  Jerry DeLisle  <jvdelisle@gcc.ngu.org>
+
+	PR fortran/90374
+	* io/format.c (parse_format_list): Add braces to disambiguate
+	conditional.
+
 2019-11-28  Jerry DeLisle  <jvdelisle@gcc.ngu.org>
 
 	PR fortran/90374
diff --git a/libgfortran/io/format.c b/libgfortran/io/format.c
index dd448c83e87..0b23721c055 100644
--- a/libgfortran/io/format.c
+++ b/libgfortran/io/format.c
@@ -1027,17 +1027,19 @@ parse_format_list (st_parameter_dt *dtp, bool *seen_dd)
 	{
 	  t = format_lex (fmt);
 	  if (t != FMT_POSINT)
-	    if (t == FMT_ZERO)
-	      {
-		notify_std (&dtp->common, GFC_STD_F2018,
-			    "Positive exponent width required");
-	      }
-	    else
-	      {
-		fmt->error = "Positive exponent width required in "
-			     "format string at %L";
-		goto finished;
-	      }
+	    {
+	      if (t == FMT_ZERO)
+		{
+		  notify_std (&dtp->common, GFC_STD_F2018,
+			      "Positive exponent width required");
+		}
+	      else
+		{
+		  fmt->error = "Positive exponent width required in "
+			       "format string at %L";
+		  goto finished;
+		}
+	    }
 	  tail->u.real.e = fmt->value;
 	}