diff --git a/besu/src/main/java/org/hyperledger/besu/cli/options/unstable/DataStorageOptions.java b/besu/src/main/java/org/hyperledger/besu/cli/options/unstable/DataStorageOptions.java
index bc0c08bc0b..0eb0569239 100644
--- a/besu/src/main/java/org/hyperledger/besu/cli/options/unstable/DataStorageOptions.java
+++ b/besu/src/main/java/org/hyperledger/besu/cli/options/unstable/DataStorageOptions.java
@@ -46,6 +46,7 @@ public class DataStorageOptions implements CLIOptions<DataStorageConfiguration>
   @Option(
       names = {BONSAI_STORAGE_FORMAT_MAX_LAYERS_TO_LOAD},
       hidden = true,
+      paramLabel = "<LONG>",
       description =
           "Limit of back layers that can be loaded with BONSAI (default: ${DEFAULT-VALUE}).",
       arity = "1")
diff --git a/besu/src/main/java/org/hyperledger/besu/cli/util/TomlConfigFileDefaultProvider.java b/besu/src/main/java/org/hyperledger/besu/cli/util/TomlConfigFileDefaultProvider.java
index 6b709dea77..e6e9b9b35b 100644
--- a/besu/src/main/java/org/hyperledger/besu/cli/util/TomlConfigFileDefaultProvider.java
+++ b/besu/src/main/java/org/hyperledger/besu/cli/util/TomlConfigFileDefaultProvider.java
@@ -70,6 +70,8 @@ public class TomlConfigFileDefaultProvider implements IDefaultValueProvider {
       defaultValue = getListEntryAsString(optionSpec);
     } else if (optionSpec.type().equals(Integer.class) || optionSpec.type().equals(int.class)) {
       defaultValue = getIntegerEntryAsString(optionSpec);
+    } else if (optionSpec.type().equals(Long.class) || optionSpec.type().equals(long.class)) {
+      defaultValue = getIntegerEntryAsString(optionSpec);
     } else if (optionSpec.type().equals(Wei.class)) {
       defaultValue = getIntegerEntryAsString(optionSpec);
     } else if (optionSpec.type().equals(BigInteger.class)) {
diff --git a/besu/src/test/java/org/hyperledger/besu/cli/TomlConfigFileDefaultProviderTest.java b/besu/src/test/java/org/hyperledger/besu/cli/TomlConfigFileDefaultProviderTest.java
index 95dc73ef49..d48488a4b8 100644
--- a/besu/src/test/java/org/hyperledger/besu/cli/TomlConfigFileDefaultProviderTest.java
+++ b/besu/src/test/java/org/hyperledger/besu/cli/TomlConfigFileDefaultProviderTest.java
@@ -56,6 +56,7 @@ public class TomlConfigFileDefaultProviderTest {
     when(mockCommandLine.getCommandSpec()).thenReturn(mockCommandSpec);
     Map<String, OptionSpec> validOptionsMap = new HashMap<>();
     validOptionsMap.put("--a-short-option", null);
+    validOptionsMap.put("--an-actual-long-option", null);
     validOptionsMap.put("--a-longer-option", null);
     when(mockCommandSpec.optionsMap()).thenReturn(validOptionsMap);
 
@@ -65,6 +66,8 @@ public class TomlConfigFileDefaultProviderTest {
 
       fileWriter.write("a-short-option='123'");
       fileWriter.newLine();
+      fileWriter.write("an-actual-long-option=" + Long.MAX_VALUE);
+      fileWriter.newLine();
       fileWriter.write("a-longer-option='1234'");
       fileWriter.flush();
 
@@ -86,6 +89,15 @@ public class TomlConfigFileDefaultProviderTest {
                       .build()))
           .isEqualTo("123");
 
+      // this option must be found in config as one of its names is present in the file.
+      // also this is a long.
+      assertThat(
+              providerUnderTest.defaultValue(
+                  OptionSpec.builder("an-actual-long-option", "another-name-for-the-option")
+                      .type(Long.class)
+                      .build()))
+          .isEqualTo(String.valueOf(Long.MAX_VALUE));
+
       // this option must be found in config as one of its names is present in the file.
       // also this is the longest one.
       assertThat(