diff --git a/datafusion/expr/src/built_in_function.rs b/datafusion/expr/src/built_in_function.rs
index 114aa29aee132..ffdd51dfd5d0a 100644
--- a/datafusion/expr/src/built_in_function.rs
+++ b/datafusion/expr/src/built_in_function.rs
@@ -548,8 +548,7 @@ impl BuiltinScalarFunction {
             BuiltinScalarFunction::Concat => Ok(Utf8),
             BuiltinScalarFunction::ConcatWithSeparator => Ok(Utf8),
             BuiltinScalarFunction::DatePart => Ok(Float64),
-            // DateTrunc always makes nanosecond timestamps
-            BuiltinScalarFunction::DateTrunc | BuiltinScalarFunction::DateBin => {
+            BuiltinScalarFunction::DateBin | BuiltinScalarFunction::DateTrunc => {
                 match input_expr_types[1] {
                     Timestamp(Nanosecond, _) | Utf8 => Ok(Timestamp(Nanosecond, None)),
                     Timestamp(Microsecond, _) => Ok(Timestamp(Microsecond, None)),
diff --git a/datafusion/physical-expr/src/datetime_expressions.rs b/datafusion/physical-expr/src/datetime_expressions.rs
index b946fb0e8d5ce..01e76a3a3f2df 100644
--- a/datafusion/physical-expr/src/datetime_expressions.rs
+++ b/datafusion/physical-expr/src/datetime_expressions.rs
@@ -396,9 +396,8 @@ pub fn date_trunc(args: &[ColumnarValue]) -> Result<ColumnarValue> {
             }
         }
         _ => {
-            println!("{}, {:?}", granularity, array);
             return Err(DataFusionError::Execution(
-                "second argument of `date_trunc` must be nanosecond timestamp scalar or array array".to_string(),
+                "second argument of `date_trunc` must be nanosecond timestamp scalar or array".to_string(),
             ));
         }
     })