diff --git a/velox/functions/lib/Re2Functions.cpp b/velox/functions/lib/Re2Functions.cpp
index ef1291fbe9d5..78ce3e2f29b5 100644
--- a/velox/functions/lib/Re2Functions.cpp
+++ b/velox/functions/lib/Re2Functions.cpp
@@ -144,8 +144,14 @@ bool re2Extract(
     }
   } else {
     const re2::StringPiece extracted = groups[groupId];
-    result.setNoCopy(row, StringView(extracted.data(), extracted.size()));
-    return !StringView::isInline(extracted.size());
+    // Check if the extracted data is null.
+    if (extracted.data()) {
+      result.setNoCopy(row, StringView(extracted.data(), extracted.size()));
+      return !StringView::isInline(extracted.size());
+    } else {
+      result.setNull(row, true);
+      return false;
+    }
   }
 }
 
diff --git a/velox/functions/lib/tests/Re2FunctionsTest.cpp b/velox/functions/lib/tests/Re2FunctionsTest.cpp
index 58fd48ea5de9..f27d9cb46453 100644
--- a/velox/functions/lib/tests/Re2FunctionsTest.cpp
+++ b/velox/functions/lib/tests/Re2FunctionsTest.cpp
@@ -369,6 +369,9 @@ void testRe2Extract(F&& regexExtract) {
   EXPECT_EQ(regexExtract(std::nullopt, "\\d+", 0), std::nullopt);
   EXPECT_EQ(regexExtract(" 123 ", std::nullopt, 0), std::nullopt);
   EXPECT_EQ(regexExtract(" 123 ", "\\d+", std::nullopt), std::nullopt);
+  // Group case that mismatch.
+  EXPECT_EQ(
+      regexExtract("rat cat\nbat dog", "ra(.)|blah(.)(.)", 2), std::nullopt);
 }
 
 TEST_F(Re2FunctionsTest, regexExtract) {