diff --git a/projectapi/apichanges.xml b/projectapi/apichanges.xml
--- a/projectapi/apichanges.xml
+++ b/projectapi/apichanges.xml
@@ -108,6 +108,34 @@
 
     <changes>
 
+    <change id="LookupProvider.Registration.ProjectType.position">
+            <api name="general"/>
+            <summary>Changed <code>LookupProvider.Registration.ProjectType.position</code> default value</summary>
+            <version major="1" minor="39"/>
+            <date day="11" month="9" year="2011"/>
+            <author login="tzezula"/>
+            <compatibility modification="yes">
+                <p>
+                    Behavioral change is that recompiled services with no explicit position will now be at 0 rather than MAX_VALUE,
+                    meaning they will be ahead of rather than behind services with an explicit positive value.
+                    The position 0 is a new default even for <code>ProjectServiceProvider</code>, <code>LookupProvider.Registration</code>
+                    and <code>LookupMerger.Registration</code> which does not use <code>LookupProvider.Registration.ProjectType</code>.
+                </p>
+            </compatibility>
+            <description>
+                <p>
+                    Changed the default value of the <code>LookupProvider.Registration.ProjectType.position</code>
+                    from Integer.MAX_VALUE to 0. The reason for this change is to allow client to specify an ordering among
+                    services without a need to order all services contributed into Project's lookup. Without this change warnings
+                    from <code>warnings from org.openide.filesystems.Ordering</code> will be printed if some but not all services
+                    for a given project type specified an order.
+                </p>
+            </description>
+            <class package="org.netbeans.spi.project" name="LookupProvider"/>
+            <class package="org.netbeans.spi.project" name="ProjectServiceProvider"/>
+            <class package="org.netbeans.spi.project" name="LookupMerger"/>
+            <issue number="201893"/>
+        </change>
         <change id="ActionProviderMerger">
             <api name="general"/>
             <summary>Added <code>LookupProviderSupport.createActionProviderMerger</code> factory method</summary>
diff --git a/projectapi/manifest.mf b/projectapi/manifest.mf
--- a/projectapi/manifest.mf
+++ b/projectapi/manifest.mf
@@ -1,7 +1,7 @@
 Manifest-Version: 1.0
 OpenIDE-Module: org.netbeans.modules.projectapi/1
 OpenIDE-Module-Install: org/netbeans/modules/projectapi/Installer.class
-OpenIDE-Module-Specification-Version: 1.38
+OpenIDE-Module-Specification-Version: 1.39
 OpenIDE-Module-Localizing-Bundle: org/netbeans/modules/projectapi/Bundle.properties
 OpenIDE-Module-Layer: org/netbeans/modules/projectapi/layer.xml
 
diff --git a/projectapi/src/org/netbeans/modules/projectapi/LookupProviderAnnotationProcessor.java b/projectapi/src/org/netbeans/modules/projectapi/LookupProviderAnnotationProcessor.java
--- a/projectapi/src/org/netbeans/modules/projectapi/LookupProviderAnnotationProcessor.java
+++ b/projectapi/src/org/netbeans/modules/projectapi/LookupProviderAnnotationProcessor.java
@@ -99,7 +99,7 @@
                 throw new LayerGenerationException("You must specify either projectType or projectTypes", e, processingEnv, lpr);
             }
             for (String type : lpr.projectType()) {
-                layer(e).instanceFile("Projects/" + type + "/Lookup", null, LookupProvider.class, lpr, null).write();
+                layer(e).instanceFile("Projects/" + type + "/Lookup", null, LookupProvider.class, lpr, null).position(0).write();
             }
             for (LookupProvider.Registration.ProjectType type : lpr.projectTypes()) {
                 layer(e).instanceFile("Projects/" + type.id() + "/Lookup", null, LookupProvider.class, type, null).position(type.position()).write();
@@ -131,7 +131,8 @@
                 LayerBuilder.File f = layer(e).file("Projects/" + type + "/Lookup/" + fileBaseName + ".instance").
                         methodvalue("instanceCreate", LazyLookupProviders.class.getName(), "forProjectServiceProvider").
                         stringvalue("class", binAndMethodNames[0]).
-                        stringvalue("service", servicesBinName);
+                        stringvalue("service", servicesBinName).
+                        position(0);
                 if (binAndMethodNames[1] != null) {
                     f.stringvalue("method", binAndMethodNames[1]);
                 }
@@ -174,6 +175,7 @@
                         methodvalue("instanceCreate", LazyLookupProviders.class.getName(), "forLookupMerger").
                         instanceAttribute("lookupMergerInstance", LookupMerger.class).
                         stringvalue("service", serviceBinName).
+                        position(0).
                         write();
             }
             for (LookupProvider.Registration.ProjectType type : lmr.projectTypes()) {
diff --git a/projectapi/src/org/netbeans/spi/project/LookupProvider.java b/projectapi/src/org/netbeans/spi/project/LookupProvider.java
--- a/projectapi/src/org/netbeans/spi/project/LookupProvider.java
+++ b/projectapi/src/org/netbeans/spi/project/LookupProvider.java
@@ -109,7 +109,7 @@
             /**
              * Optional ordering.
              */
-            int position() default Integer.MAX_VALUE;
+            int position() default 0;
         }
     }