diff --git a/exporters/zipkin/src/main/java/io/opentelemetry/exporters/zipkin/ZipkinSpanExporter.java b/exporters/zipkin/src/main/java/io/opentelemetry/exporters/zipkin/ZipkinSpanExporter.java
index f1b1c42f35..c119bed367 100644
--- a/exporters/zipkin/src/main/java/io/opentelemetry/exporters/zipkin/ZipkinSpanExporter.java
+++ b/exporters/zipkin/src/main/java/io/opentelemetry/exporters/zipkin/ZipkinSpanExporter.java
@@ -127,7 +127,6 @@ public final class ZipkinSpanExporter implements SpanExporter {
     Endpoint endpoint = chooseEndpoint(spanData, localEndpoint);
 
     long startTimestamp = toEpochMicros(spanData.getStartEpochNanos());
-
     long endTimestamp = toEpochMicros(spanData.getEndEpochNanos());
 
     final Span.Builder spanBuilder =
@@ -137,7 +136,7 @@ public final class ZipkinSpanExporter implements SpanExporter {
             .kind(toSpanKind(spanData))
             .name(spanData.getName())
             .timestamp(toEpochMicros(spanData.getStartEpochNanos()))
-            .duration(endTimestamp - startTimestamp)
+            .duration(Math.max(1, endTimestamp - startTimestamp))
             .localEndpoint(endpoint);
 
     if (SpanId.isValid(spanData.getParentSpanId())) {
diff --git a/exporters/zipkin/src/test/java/io/opentelemetry/exporters/zipkin/ZipkinSpanExporterTest.java b/exporters/zipkin/src/test/java/io/opentelemetry/exporters/zipkin/ZipkinSpanExporterTest.java
index 70ff8449f1..fbd19663bc 100644
--- a/exporters/zipkin/src/test/java/io/opentelemetry/exporters/zipkin/ZipkinSpanExporterTest.java
+++ b/exporters/zipkin/src/test/java/io/opentelemetry/exporters/zipkin/ZipkinSpanExporterTest.java
@@ -88,6 +88,18 @@ class ZipkinSpanExporterTest {
         .isEqualTo(buildZipkinSpan(Span.Kind.SERVER));
   }
 
+  @Test
+  void generateSpan_subMicroDurations() {
+    SpanData data =
+        buildStandardSpan()
+            .setStartEpochNanos(1505855794_194009601L)
+            .setEndEpochNanos(1505855794_194009999L)
+            .build();
+
+    Span expected = standardZipkinSpanBuilder(Span.Kind.SERVER).duration(1).build();
+    assertThat(ZipkinSpanExporter.generateSpan(data, localEndpoint)).isEqualTo(expected);
+  }
+
   @Test
   void generateSpan_ServerKind() {
     SpanData data = buildStandardSpan().setKind(Kind.SERVER).build();
@@ -313,15 +325,19 @@ class ZipkinSpanExporterTest {
         .setHasRemoteParent(true)
         .setName("Recv.helloworld.Greeter.SayHello")
         .setStartEpochNanos(1505855794_194009601L)
+        .setEndEpochNanos(1505855799_465726528L)
         .setAttributes(attributes)
         .setTotalAttributeCount(attributes.size())
         .setEvents(annotations)
         .setLinks(Collections.emptyList())
-        .setEndEpochNanos(1505855799_465726528L)
         .setHasEnded(true);
   }
 
   private static Span buildZipkinSpan(Span.Kind kind) {
+    return standardZipkinSpanBuilder(kind).build();
+  }
+
+  private static Span.Builder standardZipkinSpanBuilder(Span.Kind kind) {
     return Span.newBuilder()
         .traceId(TRACE_ID)
         .parentId(PARENT_SPAN_ID)
@@ -332,9 +348,7 @@ class ZipkinSpanExporterTest {
         .duration((1505855799000000L + 465726528L / 1000) - (1505855794000000L + 194009601L / 1000))
         .localEndpoint(localEndpoint)
         .addAnnotation(1505855799000000L + 433901068L / 1000, "RECEIVED")
-        .addAnnotation(1505855799000000L + 459486280L / 1000, "SENT")
-        //        .putTag(ZipkinSpanExporter.STATUS_CODE, status)
-        .build();
+        .addAnnotation(1505855799000000L + 459486280L / 1000, "SENT");
   }
 
   abstract static class ConfigBuilderTest extends ConfigBuilder<ConfigBuilderTest> {