diff --git a/Source/cmDSPWriter.cxx b/Source/cmDSPWriter.cxx
index 5e684fdd3..022d6444d 100644
--- a/Source/cmDSPWriter.cxx
+++ b/Source/cmDSPWriter.cxx
@@ -42,7 +42,6 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include "cmStandardIncludes.h"
 #include "cmSystemTools.h"
 #include "cmRegularExpression.h"
-#include "cmCacheManager.h"
 
 cmDSPWriter::~cmDSPWriter()
 {