diff --git a/src/types/external/big_decimal.rs b/src/types/external/big_decimal.rs
index af3eea95..049ad0a0 100644
--- a/src/types/external/big_decimal.rs
+++ b/src/types/external/big_decimal.rs
@@ -14,12 +14,12 @@ impl ScalarType for BigDecimal {
                 }
 
                 if let Some(f) = n.as_i64() {
-                    return Ok(BigDecimal::from(f)); 
+                    return Ok(BigDecimal::from(f));
                 }
 
                 // unwrap safe here, because we have check the other possibility
                 Ok(BigDecimal::from(n.as_u64().unwrap()))
-            },
+            }
             Value::String(s) => Ok(BigDecimal::from_str(s)?),
             _ => Err(InputValueError::expected_type(value)),
         }
@@ -28,4 +28,4 @@ impl ScalarType for BigDecimal {
     fn to_value(&self) -> Value {
         Value::String(self.to_string())
     }
-}
\ No newline at end of file
+}
diff --git a/src/types/external/decimal.rs b/src/types/external/decimal.rs
index e1d5f299..dca544b3 100644
--- a/src/types/external/decimal.rs
+++ b/src/types/external/decimal.rs
@@ -15,12 +15,12 @@ impl ScalarType for Decimal {
                 }
 
                 if let Some(f) = n.as_i64() {
-                    return Ok(Decimal::from(f)); 
+                    return Ok(Decimal::from(f));
                 }
 
                 // unwrap safe here, because we have check the other possibility
                 Ok(Decimal::from(n.as_u64().unwrap()))
-            },
+            }
             _ => Err(InputValueError::expected_type(value)),
         }
     }
diff --git a/src/types/external/mod.rs b/src/types/external/mod.rs
index 45c842b9..f9086efb 100644
--- a/src/types/external/mod.rs
+++ b/src/types/external/mod.rs
@@ -15,6 +15,8 @@ mod string;
 #[cfg(feature = "tokio-sync")]
 mod tokio;
 
+#[cfg(feature = "bigdecimal")]
+mod big_decimal;
 #[cfg(feature = "bson")]
 mod bson;
 #[cfg(feature = "chrono-tz")]
@@ -23,8 +25,6 @@ mod chrono_tz;
 mod datetime;
 #[cfg(feature = "decimal")]
 mod decimal;
-#[cfg(feature = "bigdecimal")]
-mod big_decimal;
 #[cfg(feature = "chrono-duration")]
 mod duration;
 #[cfg(feature = "chrono")]