diff --git a/velox/type/DecimalUtil.h b/velox/type/DecimalUtil.h
index 6c46032975bb..3e469e831e2f 100644
--- a/velox/type/DecimalUtil.h
+++ b/velox/type/DecimalUtil.h
@@ -237,7 +237,7 @@ class DecimalUtil {
         static_cast<uint128_t>(value > 0 ? value : -value);
     const auto integralDigits =
         integralValue == 0 ? 0 : countDigits(integralValue);
-    const auto fractionDigits = digits - integralDigits;
+    const auto fractionDigits = std::max(digits - integralDigits, 0);
     /// Scales up the input value to keep all the precise fractional digits
     /// before rounding. Convert value to long double type, as double * int128_t
     /// returns int128_t and fractional digits are lost. No need to consider
diff --git a/velox/vector/arrow/tests/ArrowBridgeArrayTest.cpp b/velox/vector/arrow/tests/ArrowBridgeArrayTest.cpp
index 77f605be9eb5..105a4931424a 100644
--- a/velox/vector/arrow/tests/ArrowBridgeArrayTest.cpp
+++ b/velox/vector/arrow/tests/ArrowBridgeArrayTest.cpp
@@ -186,7 +186,8 @@ class ArrowBridgeArrayExportTest : public testing::Test {
               break;
             default:
               VELOX_USER_FAIL(fmt::format(
-                  "Timestamp unit not supported: {}.", options_.timestampUnit));
+                  "Timestamp unit not supported: {}.",
+                  (int8_t)options_.timestampUnit));
           }
         } else {
           EXPECT_EQ(inputData[i], values[i]) << "mismatch at index " << i;
@@ -1034,7 +1035,8 @@ class ArrowBridgeArrayImportTest : public ArrowBridgeArrayExportTest {
               break;
             default:
               VELOX_USER_FAIL(fmt::format(
-                  "Timestamp unit not supported: {}.", options_.timestampUnit));
+                  "Timestamp unit not supported: {}.",
+                  (int8_t)options_.timestampUnit));
           }
         } else {
           rawValues[i] = *inputValues[i];
@@ -1180,7 +1182,8 @@ class ArrowBridgeArrayImportTest : public ArrowBridgeArrayExportTest {
               break;
             default:
               VELOX_USER_FAIL(fmt::format(
-                  "Timestamp unit not supported: {}.", options_.timestampUnit));
+                  "Timestamp unit not supported: {}.",
+                  (int8_t)options_.timestampUnit));
           }
         }
       } else {