diff --git a/datetime/src/main/java/com/fasterxml/jackson/datatype/jsr310/deser/DurationDeserializer.java b/datetime/src/main/java/com/fasterxml/jackson/datatype/jsr310/deser/DurationDeserializer.java
index 5a4065d0..da32c955 100644
--- a/datetime/src/main/java/com/fasterxml/jackson/datatype/jsr310/deser/DurationDeserializer.java
+++ b/datetime/src/main/java/com/fasterxml/jackson/datatype/jsr310/deser/DurationDeserializer.java
@@ -55,8 +55,12 @@ public class DurationDeserializer extends JSR310DeserializerBase<Duration>
 
     /**
      * Since 2.12
+     * When set, values will be deserialized using the specified unit. Using this parser will tipically
+     * override the value specified in {@link DeserializationFeature.READ_DATE_TIMESTAMPS_AS_NANOSECONDS} as it is
+     * considered that the unit set in {@link JsonFormat#pattern()} has precedence since is more specific.
+     * @see [jackson-modules-java8#184] for more info
      */
-    private DurationPattern _durationPattern;
+    private DurationUnitParser _durationUnitParser;
 
     private DurationDeserializer()
     {
@@ -70,9 +74,9 @@ protected DurationDeserializer(DurationDeserializer base, Boolean leniency) {
         super(base, leniency);
     }
 
-    protected DurationDeserializer(DurationDeserializer base, DurationPattern durationPattern) {
+    protected DurationDeserializer(DurationDeserializer base, DurationUnitParser durationUnitParser) {
         super(base, base._isLenient);
-        _durationPattern = durationPattern;
+        _durationUnitParser = durationUnitParser;
     }
 
     @Override
@@ -94,7 +98,7 @@ public JsonDeserializer<?> createContextual(DeserializationContext ctxt,
                 }
             }
             if (format.hasPattern()) {
-                deser = DurationPattern.from(format.getPattern())
+                deser = DurationUnitParser.from(format.getPattern())
                         .map(deser::withPattern)
                         .orElse(deser);
             }
@@ -102,7 +106,7 @@ public JsonDeserializer<?> createContextual(DeserializationContext ctxt,
         return deser;
     }
 
-    private DurationDeserializer withPattern(DurationPattern pattern) {
+    private DurationDeserializer withPattern(DurationUnitParser pattern) {
         return new DurationDeserializer(this, pattern);
     }
 
@@ -113,14 +117,14 @@ public Duration deserialize(JsonParser parser, DeserializationContext context) t
         {
             case JsonTokenId.ID_NUMBER_FLOAT:
                 BigDecimal decValue = parser.getDecimalValue();
-                if (_durationPattern != null) {
-                    return _durationPattern.parse(decValue.longValue());
+                if (_durationUnitParser != null) {
+                    return _durationUnitParser.parse(decValue.longValue());
                 }
                 return DecimalUtils.extractSecondsAndNanos(decValue, Duration::ofSeconds);
             case JsonTokenId.ID_NUMBER_INT:
                 long intValue = parser.getLongValue();
-                if (_durationPattern != null) {
-                    return _durationPattern.parse(intValue);
+                if (_durationUnitParser != null) {
+                    return _durationUnitParser.parse(intValue);
                 }
                 return _fromTimestamp(context, intValue);
             case JsonTokenId.ID_STRING:
@@ -160,8 +164,8 @@ && _isValidTimestampString(value)) {
         }
 
         try {
-            if (_durationPattern != null) {
-                return _durationPattern.parse(NumberInput.parseLong(value));
+            if (_durationUnitParser != null) {
+                return _durationUnitParser.parse(NumberInput.parseLong(value));
             }
 
             return Duration.parse(value);
@@ -177,10 +181,10 @@ protected Duration _fromTimestamp(DeserializationContext ctxt, long ts) {
         return Duration.ofMillis(ts);
     }
 
-    protected static class DurationPattern {
+    protected static class DurationUnitParser {
         final TemporalUnit unit;
 
-        DurationPattern(TemporalUnit unit) {
+        DurationUnitParser(TemporalUnit unit) {
             this.unit = unit;
         }
 
@@ -188,10 +192,10 @@ Duration parse(long value) {
             return Duration.of(value, unit);
         }
 
-        static Optional<DurationPattern> from(String pattern) {
+        static Optional<DurationUnitParser> from(String unit) {
             return Stream.of(ChronoUnit.values())
-                    .filter(u -> u.toString().equalsIgnoreCase(pattern))
-                    .map(DurationPattern::new)
+                    .filter(u -> u.toString().equalsIgnoreCase(unit))
+                    .map(DurationUnitParser::new)
                     .findFirst();
         }
     }
diff --git a/datetime/src/test/java/com/fasterxml/jackson/datatype/jsr310/deser/DurationPatternEmptyTest.java b/datetime/src/test/java/com/fasterxml/jackson/datatype/jsr310/deser/DurationUnitParserEmptyTest.java
similarity index 61%
rename from datetime/src/test/java/com/fasterxml/jackson/datatype/jsr310/deser/DurationPatternEmptyTest.java
rename to datetime/src/test/java/com/fasterxml/jackson/datatype/jsr310/deser/DurationUnitParserEmptyTest.java
index dfb89d77..efeb9fda 100644
--- a/datetime/src/test/java/com/fasterxml/jackson/datatype/jsr310/deser/DurationPatternEmptyTest.java
+++ b/datetime/src/test/java/com/fasterxml/jackson/datatype/jsr310/deser/DurationUnitParserEmptyTest.java
@@ -1,30 +1,30 @@
 package com.fasterxml.jackson.datatype.jsr310.deser;
 
-import com.fasterxml.jackson.datatype.jsr310.deser.DurationDeserializer.DurationPattern;
+import com.fasterxml.jackson.datatype.jsr310.deser.DurationDeserializer.DurationUnitParser;
 import org.junit.Test;
 
 import static java.util.Optional.empty;
 import static org.junit.Assert.assertEquals;
 
-public class DurationPatternEmptyTest {
+public class DurationUnitParserEmptyTest {
 
     @Test
     public void shouldReturnEmpty_whenNull() {
-        assertEquals(empty(), DurationPattern.from(null));
+        assertEquals(empty(), DurationUnitParser.from(null));
     }
 
     @Test
     public void shouldReturnEmpty_whenEmptyString() {
-        assertEquals(empty(), DurationPattern.from(""));
+        assertEquals(empty(), DurationUnitParser.from(""));
     }
 
     @Test
     public void shouldReturnEmpty_whenSpaces() {
-        assertEquals(empty(), DurationPattern.from("  "));
+        assertEquals(empty(), DurationUnitParser.from("  "));
     }
 
     @Test
     public void shouldReturnEmpty_whenDoesNotMatchAnyTemporalUnit() {
-        assertEquals(empty(), DurationPattern.from("DOESNOTMATCH"));
+        assertEquals(empty(), DurationUnitParser.from("DOESNOTMATCH"));
     }
 }
\ No newline at end of file
diff --git a/datetime/src/test/java/com/fasterxml/jackson/datatype/jsr310/deser/DurationPatternTest.java b/datetime/src/test/java/com/fasterxml/jackson/datatype/jsr310/deser/DurationUnitParserTest.java
similarity index 91%
rename from datetime/src/test/java/com/fasterxml/jackson/datatype/jsr310/deser/DurationPatternTest.java
rename to datetime/src/test/java/com/fasterxml/jackson/datatype/jsr310/deser/DurationUnitParserTest.java
index ec5c2a29..906daa9d 100644
--- a/datetime/src/test/java/com/fasterxml/jackson/datatype/jsr310/deser/DurationPatternTest.java
+++ b/datetime/src/test/java/com/fasterxml/jackson/datatype/jsr310/deser/DurationUnitParserTest.java
@@ -1,6 +1,6 @@
 package com.fasterxml.jackson.datatype.jsr310.deser;
 
-import com.fasterxml.jackson.datatype.jsr310.deser.DurationDeserializer.DurationPattern;
+import com.fasterxml.jackson.datatype.jsr310.deser.DurationDeserializer.DurationUnitParser;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.junit.runners.Parameterized;
@@ -19,19 +19,19 @@
 import static org.junit.Assert.assertEquals;
 
 @RunWith(Parameterized.class)
-public class DurationPatternTest {
+public class DurationUnitParserTest {
 
     private final String stringPattern;
     private final TemporalUnit temporalUnit;
 
-    public DurationPatternTest(String stringPattern, TemporalUnit temporalUnit) {
+    public DurationUnitParserTest(String stringPattern, TemporalUnit temporalUnit) {
         this.stringPattern = stringPattern;
         this.temporalUnit = temporalUnit;
     }
 
     @Test
     public void shouldMapToTemporalUnit() {
-        Optional<DurationPattern> durationPattern = DurationPattern.from(stringPattern);
+        Optional<DurationUnitParser> durationPattern = DurationUnitParser.from(stringPattern);
 
         assertEquals(of(temporalUnit), durationPattern.map(dp -> dp.unit));
     }