diff --git a/Source/cmGeneratorTarget.cxx b/Source/cmGeneratorTarget.cxx
index 2573c85a1..175bb0eec 100644
--- a/Source/cmGeneratorTarget.cxx
+++ b/Source/cmGeneratorTarget.cxx
@@ -498,11 +498,14 @@ cmTargetTraceDependencies
 
   // Queue all the source files already specified for the target.
   std::vector<cmSourceFile*> sources;
-  this->Target->GetSourceFiles(sources);
-  for(std::vector<cmSourceFile*>::const_iterator si = sources.begin();
-      si != sources.end(); ++si)
+  if (this->Target->GetType() != cmTarget::INTERFACE_LIBRARY)
     {
-    this->QueueSource(*si);
+    this->Target->GetSourceFiles(sources);
+    for(std::vector<cmSourceFile*>::const_iterator si = sources.begin();
+        si != sources.end(); ++si)
+      {
+      this->QueueSource(*si);
+      }
     }
 
   // Queue pre-build, pre-link, and post-build rule dependencies.
diff --git a/Source/cmGlobalGenerator.cxx b/Source/cmGlobalGenerator.cxx
index a61cab11d..0c4468188 100644
--- a/Source/cmGlobalGenerator.cxx
+++ b/Source/cmGlobalGenerator.cxx
@@ -1468,7 +1468,8 @@ void cmGlobalGenerator::ComputeGeneratorTargetObjects()
     for(cmGeneratorTargetsType::iterator ti = targets.begin();
         ti != targets.end(); ++ti)
       {
-      if (ti->second->Target->IsImported())
+      if (ti->second->Target->IsImported()
+          || ti->second->Target->GetType() == cmTarget::INTERFACE_LIBRARY)
         {
         continue;
         }
diff --git a/Source/cmTarget.cxx b/Source/cmTarget.cxx
index 3e96b6970..db34bd826 100644
--- a/Source/cmTarget.cxx
+++ b/Source/cmTarget.cxx
@@ -551,6 +551,7 @@ bool cmTarget::FindSourceFiles()
 //----------------------------------------------------------------------------
 void cmTarget::GetSourceFiles(std::vector<cmSourceFile*> &files) const
 {
+  assert(this->GetType() != INTERFACE_LIBRARY);
   files = this->SourceFiles;
 }