diff --git a/src/main/java/edu/harvard/iq/dataverse/pidproviders/AbstractPidProvider.java b/src/main/java/edu/harvard/iq/dataverse/pidproviders/AbstractPidProvider.java
index 250eae7e5fc..45d6af936ef 100644
--- a/src/main/java/edu/harvard/iq/dataverse/pidproviders/AbstractPidProvider.java
+++ b/src/main/java/edu/harvard/iq/dataverse/pidproviders/AbstractPidProvider.java
@@ -323,14 +323,16 @@ public GlobalId parsePersistentId(String protocol, String authority, String iden
         if (!PidProvider.isValidGlobalId(protocol, authority, identifier)) {
             return null;
         }
-        if(isCaseInsensitive) {
-            identifier = identifier.toUpperCase();
-        }
-        // Check authority/identifier if this is a provider that manages specific
-        // identifiers
-        // /is not one of the unmanaged providers that has null authority
-        if (getAuthority() != null) {
 
+        /*
+         * Check authority/identifier if this is a provider that manages specific
+         * identifiers/is not one of the unmanaged providers that has null authority
+         */
+        if (getAuthority() != null) {
+            if(isCaseInsensitive) {
+                identifier = identifier.toUpperCase();
+            }
+            
             String cleanIdentifier = protocol + ":" + authority + getSeparator() + identifier;
             /*
              * Test if this provider manages this identifier - return null if it does not.
diff --git a/src/test/java/edu/harvard/iq/dataverse/pidproviders/PidUtilTest.java b/src/test/java/edu/harvard/iq/dataverse/pidproviders/PidUtilTest.java
index ecf18e6b1ca..3a810892c71 100644
--- a/src/test/java/edu/harvard/iq/dataverse/pidproviders/PidUtilTest.java
+++ b/src/test/java/edu/harvard/iq/dataverse/pidproviders/PidUtilTest.java
@@ -99,7 +99,7 @@
 @JvmSetting(key = JvmSettings.PID_PROVIDER_LABEL, value = "FAKE 1", varArgs = "fake1")
 @JvmSetting(key = JvmSettings.PID_PROVIDER_TYPE, value = FakeDOIProvider.TYPE, varArgs = "fake1")
 @JvmSetting(key = JvmSettings.PID_PROVIDER_AUTHORITY, value = "10.5074", varArgs = "fake1")
-@JvmSetting(key = JvmSettings.PID_PROVIDER_SHOULDER, value = "FK", varArgs = "fake1")
+@JvmSetting(key = JvmSettings.PID_PROVIDER_SHOULDER, value = "fk", varArgs = "fake1")
 @JvmSetting(key = JvmSettings.PID_PROVIDER_MANAGED_LIST, value = "doi:10.5073/FK3ABCDEF", varArgs ="fake1")
 
 //HANDLE 1
@@ -316,6 +316,12 @@ public void testUnmanagedParsing() throws IOException {
         assertEquals(pid6String, pid6.asString());
         assertEquals(UnmanagedPermaLinkPidProvider.ID, pid6.getProviderId());
 
+        //Lowercase test for unmanaged DOIs
+        String pid7String = "doi:10.5281/zenodo.6381129";
+        GlobalId pid7 = PidUtil.parseAsGlobalID(pid7String);
+        assertEquals(UnmanagedDOIProvider.ID, pid5.getProviderId());
+        assertEquals(pid7String, pid7.asString());
+        
     }
     
     @Test
@@ -353,15 +359,15 @@ public void testExcludedSetParsing() throws IOException {
     @Test
     public void testManagedSetParsing() throws IOException {
         
-        String pid1String = "doi:10.5073/FK3ABCDEF";
+        String pid1String = "doi:10.5073/fk3ABCDEF";
         GlobalId pid2 = PidUtil.parseAsGlobalID(pid1String);
-        assertEquals(pid1String, pid2.asString());
+        assertEquals(pid1String.toUpperCase(), pid2.asString().toUpperCase());
         assertEquals("fake1", pid2.getProviderId());
         assertEquals("https://doi.org/" + pid2.getAuthority() + PidUtil.getPidProvider(pid2.getProviderId()).getSeparator() + pid2.getIdentifier(),pid2.asURL());
         assertEquals("10.5073", pid2.getAuthority());
         assertEquals(AbstractDOIProvider.DOI_PROTOCOL, pid2.getProtocol());
         GlobalId pid3 = PidUtil.parseAsGlobalID(pid2.asURL());
-        assertEquals(pid1String, pid3.asString());
+        assertEquals(pid1String.toUpperCase(), pid3.asString().toUpperCase());
         assertEquals("fake1", pid3.getProviderId());
         assertFalse(PidUtil.getPidProvider(pid3.getProviderId()).canCreatePidsLike(pid3));