diff --git a/uppsrc/Core/src.tpp/Format_en-us.tpp b/uppsrc/Core/src.tpp/Format_en-us.tpp
index 84fe1accb..64c527d1f 100644
--- a/uppsrc/Core/src.tpp/Format_en-us.tpp
+++ b/uppsrc/Core/src.tpp/Format_en-us.tpp
@@ -282,8 +282,8 @@ default `= 6)]
 :: [s0;%- 123]
 :: [s0;%- Format(`"[* %2!,n]`", 123)]
 :: [s0;%- 123.00]
-:: [s0;%- Format([* `"% %%%%`"], 12.3)]
-:: [s0;%- 12.3 %]
+:: [s0;%- Format([* `"%.1f%%`"], 12.3)]
+:: [s0;%- 12.3%]
 :: [s0;%- Format(`"[* %ne]`", 1234567.89)]
 :: [s0;%- 1234567.89]
 :: [s0;%- Format(`"[* %nf]`", 1234567.89e30)]