diff --git a/Source/clzma.cpp b/Source/clzma.cpp
index 118fcec5..27140551 100644
--- a/Source/clzma.cpp
+++ b/Source/clzma.cpp
@@ -263,7 +263,7 @@ int CLZMA::CompressReal()
           break;
         if (finished)
         {
-          res = C_OK;
+          res = C_FINISHED;
           break;
         }
       }
diff --git a/Source/compressor.h b/Source/compressor.h
index abc1d6af..49524a00 100644
--- a/Source/compressor.h
+++ b/Source/compressor.h
@@ -18,6 +18,8 @@
 #define __COMPRESSOR_H__
 
 #define C_OK 0
+#define C_FINISHED 1
+
 #define C_FINISH true
 
 class ICompressor {