diff --git a/Source/cmBorlandMakefileGenerator.cxx b/Source/cmBorlandMakefileGenerator.cxx
index ce70055be..c3a8ac92d 100644
--- a/Source/cmBorlandMakefileGenerator.cxx
+++ b/Source/cmBorlandMakefileGenerator.cxx
@@ -178,7 +178,11 @@ OutputBuildObjectFromSource(std::ostream& fout,
                             const cmSourceFile& source,
                             const char* extraCompileFlags,
                             bool shared)
-{ 
+{
+  // Header files shouldn't have build rules.
+  if(source.IsAHeaderFileOnly())
+    return;
+
   std::string comment = "Build ";
   std::string objectFile = std::string(shortName) + 
     this->GetOutputExtension(source.GetSourceExtension().c_str());
diff --git a/Source/cmNMakeMakefileGenerator.cxx b/Source/cmNMakeMakefileGenerator.cxx
index fca80a7d9..4e4b3ed54 100644
--- a/Source/cmNMakeMakefileGenerator.cxx
+++ b/Source/cmNMakeMakefileGenerator.cxx
@@ -356,6 +356,10 @@ OutputBuildObjectFromSource(std::ostream& fout,
                             const char* extraCompileFlags,
                             bool shared)
 { 
+  // Header files shouldn't have build rules.
+  if(source.IsAHeaderFileOnly())
+    return;
+
   std::string comment = "Build ";
   std::string objectFile = std::string(shortName) + 
     this->GetOutputExtension(source.GetSourceExtension().c_str());
diff --git a/Source/cmUnixMakefileGenerator.cxx b/Source/cmUnixMakefileGenerator.cxx
index 4e7729377..ca4e0899b 100644
--- a/Source/cmUnixMakefileGenerator.cxx
+++ b/Source/cmUnixMakefileGenerator.cxx
@@ -1594,7 +1594,10 @@ OutputBuildObjectFromSource(std::ostream& fout,
                             const char* extraCompileFlags,
                             bool shared)
 {
-            
+  // Header files shouldn't have build rules.
+  if(source.IsAHeaderFileOnly())
+    return;
+
   std::string comment = "Build ";
   std::string objectFile = std::string(shortName) + m_ObjectFileExtension;
   comment += objectFile + "  From ";