diff --git a/docker-java-api/src/main/java/com/github/dockerjava/api/command/SaveImagesCmd.java b/docker-java-api/src/main/java/com/github/dockerjava/api/command/SaveImagesCmd.java
index 1dd504434..5b0abec9a 100644
--- a/docker-java-api/src/main/java/com/github/dockerjava/api/command/SaveImagesCmd.java
+++ b/docker-java-api/src/main/java/com/github/dockerjava/api/command/SaveImagesCmd.java
@@ -2,6 +2,7 @@
 
 import com.github.dockerjava.api.exception.NotFoundException;
 
+import javax.annotation.CheckForNull;
 import javax.annotation.Nonnull;
 import java.io.InputStream;
 import java.util.List;
@@ -22,10 +23,10 @@ interface TaggedImage {
     /**
      * Adds an image to the list of images to download.
      * @param name image name (not null)
-     * @param tag tag
+     * @param tag tag (optional; when {@code null}, only the image name is used)
      * @return this
      */
-    SaveImagesCmd withImage(@Nonnull String name, @Nonnull String tag);
+    SaveImagesCmd withImage(@Nonnull String name, @CheckForNull String tag);
 
 
     /**
diff --git a/docker-java-core/src/main/java/com/github/dockerjava/core/command/SaveImagesCmdImpl.java b/docker-java-core/src/main/java/com/github/dockerjava/core/command/SaveImagesCmdImpl.java
index 43e11f609..c2997d6f4 100644
--- a/docker-java-core/src/main/java/com/github/dockerjava/core/command/SaveImagesCmdImpl.java
+++ b/docker-java-core/src/main/java/com/github/dockerjava/core/command/SaveImagesCmdImpl.java
@@ -4,6 +4,7 @@
 import com.github.dockerjava.api.exception.NotFoundException;
 import com.google.common.collect.ImmutableList;
 
+import javax.annotation.CheckForNull;
 import javax.annotation.Nonnull;
 import java.io.InputStream;
 import java.util.List;
@@ -17,11 +18,14 @@ private static class TaggedImageImpl implements TaggedImage {
 
         private TaggedImageImpl(String name, String tag) {
             this.name = Objects.requireNonNull(name, "image name was not specified");
-            this.tag = Objects.requireNonNull(tag, "image tag was not specified");
+            this.tag = tag;
         }
 
         @Override
         public String asString() {
+            if (tag == null) {
+                return name;
+            }
             return name + ":" + tag;
         }
 
@@ -38,7 +42,7 @@ public SaveImagesCmdImpl(final SaveImagesCmd.Exec exec) {
     }
 
     @Override
-    public SaveImagesCmd withImage(@Nonnull final String name, @Nonnull final String tag) {
+    public SaveImagesCmd withImage(@Nonnull final String name, @CheckForNull final String tag) {
         taggedImages.add(new TaggedImageImpl(name, tag));
         return this;
     }
diff --git a/docker-java/src/test/java/com/github/dockerjava/core/command/SaveImagesCmdImplTest.java b/docker-java/src/test/java/com/github/dockerjava/core/command/SaveImagesCmdImplTest.java
new file mode 100644
index 000000000..52e0c36fd
--- /dev/null
+++ b/docker-java/src/test/java/com/github/dockerjava/core/command/SaveImagesCmdImplTest.java
@@ -0,0 +1,37 @@
+package com.github.dockerjava.core.command;
+
+import com.github.dockerjava.api.command.SaveImagesCmd;
+import org.junit.Test;
+
+import java.io.InputStream;
+import java.util.List;
+
+import static org.junit.Assert.assertEquals;
+
+public class SaveImagesCmdImplTest {
+
+    private static final SaveImagesCmd.Exec NOOP_EXEC = new SaveImagesCmd.Exec() {
+        @Override
+        public InputStream exec(SaveImagesCmd command) {
+            return null;
+        }
+    };
+
+    @Test
+    public void withImageNullTagProducesNameOnly() {
+        SaveImagesCmd cmd = new SaveImagesCmdImpl(NOOP_EXEC).withImage("busybox", null);
+
+        List<SaveImagesCmd.TaggedImage> images = cmd.getImages();
+        assertEquals(1, images.size());
+        assertEquals("busybox", images.get(0).asString());
+    }
+
+    @Test
+    public void withImageTaggedFormRemainsNameColonTag() {
+        SaveImagesCmd cmd = new SaveImagesCmdImpl(NOOP_EXEC).withImage("busybox", "latest");
+
+        List<SaveImagesCmd.TaggedImage> images = cmd.getImages();
+        assertEquals(1, images.size());
+        assertEquals("busybox:latest", images.get(0).asString());
+    }
+}