diff --git a/common/src/format.rs b/common/src/format.rs
index c8849895d..f9cf05e95 100644
--- a/common/src/format.rs
+++ b/common/src/format.rs
@@ -513,13 +513,9 @@ impl FormatSpec {
                     Some(_) | None => Err("%c arg not in range(0x110000)"),
                 },
             },
-            Some(FormatType::GeneralFormatUpper) => {
-                Err("Unknown format code 'G' for object of type 'int'")
-            }
-            Some(FormatType::GeneralFormatLower) => {
-                Err("Unknown format code 'g' for object of type 'int'")
-            }
-            Some(FormatType::FixedPointUpper)
+            Some(FormatType::GeneralFormatUpper)
+            | Some(FormatType::GeneralFormatLower)
+            | Some(FormatType::FixedPointUpper)
             | Some(FormatType::FixedPointLower)
             | Some(FormatType::ExponentUpper)
             | Some(FormatType::ExponentLower)
diff --git a/extra_tests/snippets/builtin_format.py b/extra_tests/snippets/builtin_format.py
index 838c917a5..fcf395051 100644
--- a/extra_tests/snippets/builtin_format.py
+++ b/extra_tests/snippets/builtin_format.py
@@ -64,3 +64,5 @@ assert f"{123.456:09,}" == "0,123.456"
 assert f"{123.456:010,}" == "00,123.456"
 assert f"{123.456:011,}" == "000,123.456"
 assert f"{123.456:+011,}" == "+00,123.456"
+assert f"{1234:.3g}" == "1.23e+03"
+assert f"{1234567:.6G}" == "1.23457E+06"