diff --git a/src/common/tvgCompressor.cpp b/src/common/tvgCompressor.cpp
index ffc563f7..a068d91b 100644
--- a/src/common/tvgCompressor.cpp
+++ b/src/common/tvgCompressor.cpp
@@ -468,7 +468,7 @@ size_t b64Decode(const char* encoded, const size_t len, char** decoded)
         encoded += 4;
     }
     *decoded = output;
-    return reserved;
+    return idx;
 }