diff --git a/twelvemonkeys-imageio/core/src/main/java/com/twelvemonkeys/imageio/spi/ProviderInfo.java b/twelvemonkeys-imageio/core/src/main/java/com/twelvemonkeys/imageio/spi/ProviderInfo.java
index b2b3e410..c651b4a8 100644
--- a/twelvemonkeys-imageio/core/src/main/java/com/twelvemonkeys/imageio/spi/ProviderInfo.java
+++ b/twelvemonkeys-imageio/core/src/main/java/com/twelvemonkeys/imageio/spi/ProviderInfo.java
@@ -34,7 +34,7 @@ public class ProviderInfo {
         mVendorName = vendor != null ? vendor : fakeVendor(pPackage);
 
         String version = pPackage.getImplementationVersion();
-        mVersion = version != null ? version : "DEV";
+        mVersion = version != null ? version : fakeVersion(pPackage);
     }
 
     private static String fakeVendor(final Package pPackage) {
@@ -42,6 +42,11 @@ public class ProviderInfo {
         return name.startsWith("com.twelvemonkeys") ? "TwelveMonkeys" : name;
     }
 
+    private String fakeVersion(Package pPackage) {
+        String name = pPackage.getName();
+        return name.startsWith("com.twelvemonkeys") ? "DEV" : "Unspecified";
+    }
+
     /**
      * Returns the vendor name, as specified in the manifest entry
      * {@code Implementation-Vendor} for the package.
diff --git a/twelvemonkeys-imageio/core/src/test/java/com/twelvemonkeys/imageio/spi/ProviderInfoTestCase.java b/twelvemonkeys-imageio/core/src/test/java/com/twelvemonkeys/imageio/spi/ProviderInfoTestCase.java
index 90386bf2..35fb902a 100644
--- a/twelvemonkeys-imageio/core/src/test/java/com/twelvemonkeys/imageio/spi/ProviderInfoTestCase.java
+++ b/twelvemonkeys-imageio/core/src/test/java/com/twelvemonkeys/imageio/spi/ProviderInfoTestCase.java
@@ -26,7 +26,7 @@ public class ProviderInfoTestCase extends TestCase {
         }
     }
 
-    public void testGetVendorNonJARPackage() {
+    public void testGetVendorUnknownNonJARPackage() {
         ProviderInfo info = new ProviderInfo(mockNonJARPackage("org.foo"));
 
         String vendor = info.getVendorName();
@@ -35,7 +35,7 @@ public class ProviderInfoTestCase extends TestCase {
 
         String version = info.getVersion();
         assertNotNull(version);
-        assertEquals("DEV", version);
+        assertEquals("Unspecified", version);
     }
 
     public void testGetVendorNonJARTMPackage() {