diff --git a/Source/cmGeneratorTarget.cxx b/Source/cmGeneratorTarget.cxx
index 8d18c3a35..a4f099bb3 100644
--- a/Source/cmGeneratorTarget.cxx
+++ b/Source/cmGeneratorTarget.cxx
@@ -663,6 +663,14 @@ void cmTargetTraceDependencies::Trace()
       {
       std::vector<std::string> objDeps;
       cmSystemTools::ExpandListArgument(additionalDeps, objDeps);
+      for(std::vector<std::string>::iterator odi = objDeps.begin();
+          odi != objDeps.end(); ++odi)
+        {
+        if (cmSystemTools::FileIsFullPath(*odi))
+          {
+          *odi = cmSystemTools::CollapseFullPath(*odi);
+          }
+        }
       this->FollowNames(objDeps);
       }
 
diff --git a/Source/cmNinjaTargetGenerator.cxx b/Source/cmNinjaTargetGenerator.cxx
index 67824c616..ff41f6dc2 100644
--- a/Source/cmNinjaTargetGenerator.cxx
+++ b/Source/cmNinjaTargetGenerator.cxx
@@ -605,6 +605,14 @@ cmNinjaTargetGenerator
   if(const char* objectDeps = source->GetProperty("OBJECT_DEPENDS")) {
     std::vector<std::string> depList;
     cmSystemTools::ExpandListArgument(objectDeps, depList);
+    for(std::vector<std::string>::iterator odi = depList.begin();
+        odi != depList.end(); ++odi)
+      {
+      if (cmSystemTools::FileIsFullPath(*odi))
+        {
+        *odi = cmSystemTools::CollapseFullPath(*odi);
+        }
+      }
     std::transform(depList.begin(), depList.end(),
                    std::back_inserter(implicitDeps), MapToNinjaPath());
   }
diff --git a/Tests/CustomCommand/CMakeLists.txt b/Tests/CustomCommand/CMakeLists.txt
index 57ffeec90..268069d72 100644
--- a/Tests/CustomCommand/CMakeLists.txt
+++ b/Tests/CustomCommand/CMakeLists.txt
@@ -154,6 +154,19 @@ add_custom_command(OUTPUT ${PROJECT_BINARY_DIR}/foo.c
   ${PROJECT_BINARY_DIR}/foo.c
   )
 
+# Test using OBJECT_DEPENDS to bring in a custom command.
+# Use a path that can be simplified to make sure paths
+# are consistently normalized.
+add_custom_command(
+  OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/subdir/../subdir/subdir.h
+  COMMAND ${CMAKE_COMMAND} -E copy
+            ${CMAKE_CURRENT_SOURCE_DIR}/subdir.h.in
+            ${CMAKE_CURRENT_BINARY_DIR}/subdir/subdir.h
+  DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/subdir.h.in
+  )
+set_property(SOURCE ${PROJECT_BINARY_DIR}/foo.c PROPERTY
+  OBJECT_DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/subdir/../subdir/subdir.h)
+
 # Add custom command to generate not_included.h, which is a header
 # file that is not included by any source in this project.  This will
 # test whether all custom command outputs explicitly listed as sources
diff --git a/Tests/CustomCommand/foo.in b/Tests/CustomCommand/foo.in
index e43aed14c..15d2d2cd8 100644
--- a/Tests/CustomCommand/foo.in
+++ b/Tests/CustomCommand/foo.in
@@ -6,6 +6,11 @@
 int generated();
 int wrapped();
 
+#include "subdir/subdir.h"
+#ifndef SUBDIR_DEF
+# error SUBDIR_DEF not defined
+#endif
+
 int main ()
 {
   if (generated()*wrapped()*doc() == 3*5*7)
diff --git a/Tests/CustomCommand/subdir.h.in b/Tests/CustomCommand/subdir.h.in
new file mode 100644
index 000000000..1e507504c
--- /dev/null
+++ b/Tests/CustomCommand/subdir.h.in
@@ -0,0 +1 @@
+#define SUBDIR_DEF