diff --git a/prospero-common/src/main/java/org/wildfly/prospero/galleon/ChannelMavenArtifactRepositoryManager.java b/prospero-common/src/main/java/org/wildfly/prospero/galleon/ChannelMavenArtifactRepositoryManager.java
index 9a9cb17cb..7afbb873f 100644
--- a/prospero-common/src/main/java/org/wildfly/prospero/galleon/ChannelMavenArtifactRepositoryManager.java
+++ b/prospero-common/src/main/java/org/wildfly/prospero/galleon/ChannelMavenArtifactRepositoryManager.java
@@ -155,6 +155,10 @@ private org.wildfly.channel.MavenArtifact resolveFromPreparedManifest(MavenArtif
     }
 
     private boolean requiresChannel(MavenArtifact artifact) {
+        // if the Galleon pack hasn't defined the version, it needs to come from channel
+        if (artifact.getVersion() == null || artifact.getVersion().isEmpty()) {
+            return true;
+        }
         boolean requireChannel = Boolean.parseBoolean(artifact.getMetadata().get(REQUIRE_CHANNEL_FOR_ALL_ARTIFACT));
         try {
             if (!requireChannel && ! fpRequireChannel(artifact)) {
diff --git a/prospero-common/src/main/java/org/wildfly/prospero/galleon/MavenArtifactMapper.java b/prospero-common/src/main/java/org/wildfly/prospero/galleon/MavenArtifactMapper.java
index eeefb0901..93b2e20e7 100644
--- a/prospero-common/src/main/java/org/wildfly/prospero/galleon/MavenArtifactMapper.java
+++ b/prospero-common/src/main/java/org/wildfly/prospero/galleon/MavenArtifactMapper.java
@@ -56,7 +56,7 @@ private String wrapNull(String value) {
 
     public List<ArtifactCoordinate> toChannelArtifacts() {
         return galleonArtifacts.stream()
-                .map(a -> new ArtifactCoordinate(a.getGroupId(), a.getArtifactId(), a.getExtension(), a.getClassifier(), a.getVersion()))
+                .map(a -> new ArtifactCoordinate(a.getGroupId(), a.getArtifactId(), a.getExtension(), a.getClassifier(), a.getVersion()==null?"":a.getVersion()))
                 .collect(Collectors.toList());
     }
 
diff --git a/prospero-common/src/test/java/org/wildfly/prospero/galleon/MavenArtifactMapperTest.java b/prospero-common/src/test/java/org/wildfly/prospero/galleon/MavenArtifactMapperTest.java
index 22c07d67c..031f5fe84 100644
--- a/prospero-common/src/test/java/org/wildfly/prospero/galleon/MavenArtifactMapperTest.java
+++ b/prospero-common/src/test/java/org/wildfly/prospero/galleon/MavenArtifactMapperTest.java
@@ -172,6 +172,16 @@ public void testArtifactNotFoundInMapper() throws Exception {
                 .isThrownBy(()->mavenArtifactMapper.get(new ArtifactCoordinate("foo.bar", "idontexist", "jar", "", "")));
     }
 
+    @Test
+    public void testArtifactWithoutVersionIsMappedWithEmptyString() throws Exception {
+        final List<org.jboss.galleon.universe.maven.MavenArtifact> galleonArtifacts = Arrays.asList(
+                galleonArtifact("foo.bar", "test1", "jar").setVersion(null));
+
+        final MavenArtifactMapper mavenArtifactMapper = new MavenArtifactMapper(galleonArtifacts);
+        assertThat(mavenArtifactMapper.toChannelArtifacts())
+                .contains(new ArtifactCoordinate("foo.bar", "test1", "jar", "", ""));
+    }
+
     private org.jboss.galleon.universe.maven.MavenArtifact galleonArtifact(String groupId, String artifactId, String extension) {
         final org.jboss.galleon.universe.maven.MavenArtifact galleonArtifact = new org.jboss.galleon.universe.maven.MavenArtifact();
         galleonArtifact.setGroupId(groupId);