diff --git a/CHANGES b/CHANGES
index be92adb..9a8a93b 100644
--- a/CHANGES
+++ b/CHANGES
@@ -8,6 +8,7 @@ Changes for 3.1.0:
 * Fixed issue #72: Move the code FileManager class generation code into its own IGenerator implementation.
 * Fixed issue #74: Invalid generated output file name: index.cpptml.cpp.
 * Fixed issue #77: Refactor generating code to use full file templates with markers.
+* Fixed issue #78: Move duplicated enums from main.cpp to enums.h.
 
 
 Changes for 3.0.1:
diff --git a/src/bin2cpp/common.cpp b/src/bin2cpp/common.cpp
index 62c7c01..eb4300e 100755
--- a/src/bin2cpp/common.cpp
+++ b/src/bin2cpp/common.cpp
@@ -41,6 +41,59 @@ namespace bin2cpp
     return BIN2CPP_VERSION;
   }
 
+  const char* getErrorCodeDescription(const APP_ERROR_CODES& error_code)
+  {
+    switch ( error_code )
+    {
+    case APP_ERROR_SUCCESS:
+      return "Success";
+      break;
+    case APP_ERROR_MISSINGARGUMENTS:
+      return "Missing arguments";
+      break;
+    case APP_ERROR_INPUTFILENOTFOUND:
+      return "Unable to open input file";
+      break;
+    case APP_ERROR_UNABLETOCREATEOUTPUTFILES:
+      return "Unable to create output files";
+      break;
+    case APP_ERROR_TOOMANYARGUMENTS:
+      return "Too many arguments";
+      break;
+    case APP_ERROR_INPUTDIRNOTFOUND:
+      return "Input directory not found";
+      break;
+    case AAP_ERROR_NOTSUPPORTED:
+      return "Operation not supported";
+      break;
+    case APP_ERROR_OPERATIONHASFAILED:
+      return "Operation has failed";
+      break;
+    case APP_ERROR_INVALIDVALUE:
+      return "Invalid value";
+      break;
+    default:
+      return "Unknown error";
+    };
+  }
+
+  const char* getUpdateModeText(const FILE_UPDATE_MODE& mode)
+  {
+    switch ( mode )
+    {
+    case WRITING:
+      return "Writing";
+    case UPDATING:
+      return "Updating";
+    case OVERWRITING:
+      return "Overwriting";
+    case SKIPPING:
+      return "Skipping";
+    default:
+      return "Unknown";
+    };
+  }
+
   uint64_t getOutputFileModifiedDate(const std::string & path)
   {
     uint64_t mod_time = 0;
diff --git a/src/bin2cpp/common.h b/src/bin2cpp/common.h
index af7eec6..096ddae 100644
--- a/src/bin2cpp/common.h
+++ b/src/bin2cpp/common.h
@@ -42,6 +42,20 @@ namespace bin2cpp
   ///</summary>
   const char * getVersionString();
 
+  ///<summary>
+  ///Get the desription of the given application error code.
+  ///</summary>
+  ///<param name="error_code">The error code.</param>
+  ///<return>Returns a string description of the given error code. Returns 'Unknown error' for unknown codes.<return>
+  const char* getErrorCodeDescription(const APP_ERROR_CODES& error_code);
+
+  ///<summary>
+  ///Get the desription of the given file update mode.
+  ///</summary>
+  ///<param name="mode">The file update mode.</param>
+  ///<return>Returns a string description of the given file update mode. Returns 'Unknown' for unknown modes.<return>
+  const char* getUpdateModeText(const FILE_UPDATE_MODE& mode);
+
   ///<summary>
   ///Returns the modified date from an embedded file's c++ header/source file.
   ///Note that the function returns the number of seconds elapsed since epoch since Jan 1st 1970.
diff --git a/src/bin2cpp/enums.h b/src/bin2cpp/enums.h
index 82a7539..eb9bdca 100644
--- a/src/bin2cpp/enums.h
+++ b/src/bin2cpp/enums.h
@@ -28,6 +28,33 @@
 namespace bin2cpp
 {
 
+  ///<summary>
+  ///Error codes returned by the application
+  ///</summary>
+  enum APP_ERROR_CODES
+  {
+    APP_ERROR_SUCCESS = 0,
+    APP_ERROR_MISSINGARGUMENTS,
+    APP_ERROR_INPUTFILENOTFOUND,
+    APP_ERROR_UNABLETOCREATEOUTPUTFILES,
+    APP_ERROR_TOOMANYARGUMENTS,
+    APP_ERROR_INPUTDIRNOTFOUND,
+    AAP_ERROR_NOTSUPPORTED,
+    APP_ERROR_OPERATIONHASFAILED,
+    APP_ERROR_INVALIDVALUE,
+  };
+
+  ///<summary>
+  ///File update modes.
+  ///</summary>
+  enum FILE_UPDATE_MODE
+  {
+    WRITING,
+    UPDATING,
+    OVERWRITING,
+    SKIPPING,
+  };
+
   ///<summary>
   ///Defines the different types of cpp encoding.
   ///</summary>
diff --git a/src/bin2cpp/main.cpp b/src/bin2cpp/main.cpp
index c70cdab..0ef661e 100755
--- a/src/bin2cpp/main.cpp
+++ b/src/bin2cpp/main.cpp
@@ -45,32 +45,12 @@
 #include "rapidassist/process.h"
 #include "rapidassist/timing.h"
 
+#include "enums.h"
 #include "common.h"
 #include "wildcard.h"
 
 using namespace bin2cpp;
 
-enum APP_ERROR_CODES
-{
-  APP_ERROR_SUCCESS = 0,
-  APP_ERROR_MISSINGARGUMENTS,
-  APP_ERROR_INPUTFILENOTFOUND,
-  APP_ERROR_UNABLETOCREATEOUTPUTFILES,
-  APP_ERROR_TOOMANYARGUMENTS,
-  APP_ERROR_INPUTDIRNOTFOUND,
-  AAP_ERROR_NOTSUPPORTED,
-  APP_ERROR_OPERATIONHASFAILED,
-  APP_ERROR_INVALIDVALUE,
-};
-
-enum FILE_UPDATE_MODE
-{
-  WRITING,
-  UPDATING,
-  OVERWRITING,
-  SKIPPING,
-};
-
 //default values
 static const size_t DEFAULT_CHUNK_SIZE = 200;
 static const char * DEFAULT_NAMESPACE_CPP = "bin2cpp";
@@ -84,59 +64,6 @@ static Dictionary output_files_dictionary;  // unique values for output file nam
 #define DIRECTORY_FILTER_SEPARATOR_STR ":"
 static const char DIRECTORY_FILTER_SEPARATOR = DIRECTORY_FILTER_SEPARATOR_STR[0];
 
-const char * getErrorCodeDescription(const APP_ERROR_CODES & error_code)
-{
-  switch(error_code)
-  {
-  case APP_ERROR_SUCCESS:
-    return "Success";
-    break;
-  case APP_ERROR_MISSINGARGUMENTS:
-    return "Missing arguments";
-    break;
-  case APP_ERROR_INPUTFILENOTFOUND:
-    return "Unable to open input file";
-    break;
-  case APP_ERROR_UNABLETOCREATEOUTPUTFILES:
-    return "Unable to create output files";
-    break;
-  case APP_ERROR_TOOMANYARGUMENTS:
-    return "Too many arguments";
-    break;
-  case APP_ERROR_INPUTDIRNOTFOUND:
-    return "Input directory not found";
-    break;
-  case AAP_ERROR_NOTSUPPORTED:
-    return "Operation not supported";
-    break;
-  case APP_ERROR_OPERATIONHASFAILED:
-    return "Operation has failed";
-    break;
-  case APP_ERROR_INVALIDVALUE:
-    return "Invalid value";
-    break;
-  default:
-    return "Unknown error";
-  };
-}
-
-const char * getUpdateModeText(const FILE_UPDATE_MODE & mode)
-{
-  switch(mode)
-  {
-  case WRITING:
-    return "Writing";
-  case UPDATING:
-    return "Updating";
-  case OVERWRITING:
-    return "Overwriting";
-  case SKIPPING:
-    return "Skipping";
-  default:
-    return "Unknown";
-  };
-}
-
 struct ARGUMENTS
 {
   bool help;
diff --git a/test/bin2cpp_unittest/TestCLI.cpp b/test/bin2cpp_unittest/TestCLI.cpp
index 1ce7046..c23556c 100755
--- a/test/bin2cpp_unittest/TestCLI.cpp
+++ b/test/bin2cpp_unittest/TestCLI.cpp
@@ -30,6 +30,10 @@
 #include "rapidassist/strings.h"
 #include "rapidassist/timing.h"
 
+#include "enums.h"
+
+using namespace bin2cpp;
+
 extern const std::string & gGeneratedFilesDir;
 #ifdef _WIN32
   const std::string & gGeneratedFilesDir = "generated_files\\";
@@ -46,19 +50,6 @@ extern const std::string & gGeneratedFilesDir;
   }\
 }
 
-enum APP_ERROR_CODES
-{
-  APP_ERROR_SUCCESS = 0,
-  APP_ERROR_MISSINGARGUMENTS,
-  APP_ERROR_INPUTFILENOTFOUND,
-  APP_ERROR_UNABLETOCREATEOUTPUTFILES,
-  APP_ERROR_TOOMANYARGUMENTS,
-  APP_ERROR_INPUTDIRNOTFOUND,
-  AAP_ERROR_NOTSUPPORTED,
-  APP_ERROR_OPERATIONHASFAILED,
-  APP_ERROR_INVALIDVALUE,
-};
-
 namespace TestCLIUtils
 {
   std::string getExpectedFilePath()