diff --git a/CMakeLists.txt b/CMakeLists.txt
index 18b242db..0c57eeb9 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -370,7 +370,7 @@ macro (configure_files srcDir destDir)
         set (sourceFilePath ${srcDir}/${sourceFile})
         if (IS_DIRECTORY ${sourceFilePath})
             message (STATUS "Copying directory ${sourceFile}")
-            make_directory (${destDir/${sourceFile})
+            make_directory (${destDir}/${sourceFile})
         else()
             message (STATUS "Copying file ${sourceFile}")
             configure_file (${sourceFilePath} ${destDir}/${sourceFile} COPYONLY)