diff --git a/src/GraphingImpl/Mocks/Bitmap.h b/src/GraphingImpl/Mocks/Bitmap.h
index eaf3973d..c4e1a2a0 100644
--- a/src/GraphingImpl/Mocks/Bitmap.h
+++ b/src/GraphingImpl/Mocks/Bitmap.h
@@ -9,7 +9,7 @@ namespace MockGraphingImpl
 {
     class Bitmap : public Graphing::IBitmap
     {
-        virtual const std::vector<BYTE> GetData() const
+        virtual std::vector<BYTE> GetData() const
         {
             return std::vector<BYTE>();
         }
diff --git a/src/GraphingInterfaces/IBitmap.h b/src/GraphingInterfaces/IBitmap.h
index d9285a50..7ce7a7ca 100644
--- a/src/GraphingInterfaces/IBitmap.h
+++ b/src/GraphingInterfaces/IBitmap.h
@@ -9,6 +9,6 @@ namespace Graphing
 {
     struct IBitmap
     {
-        virtual const std::vector<BYTE> GetData() const = 0;
+        virtual std::vector<BYTE> GetData() const = 0;
     };
 }