diff --git a/src/public/streammultiversion.cpp b/src/public/streammultiversion.cpp
index 87ae7fc..dbf1750 100644
--- a/src/public/streammultiversion.cpp
+++ b/src/public/streammultiversion.cpp
@@ -15,7 +15,7 @@ void StreamMultiversion::saveVersion(char version, QDataStream &stream) const {
     stream << version;
 }
 
-char StreamMultiversion::readVersion(QDataStream &stream) const {
+char StreamMultiversion::readVersion(QDataStream &stream) {
     char version;
     stream >> version;
 
diff --git a/src/public/streammultiversion.h b/src/public/streammultiversion.h
index 208b7a1..0030335 100644
--- a/src/public/streammultiversion.h
+++ b/src/public/streammultiversion.h
@@ -60,7 +60,7 @@ public:
      * @see fromStream
 
      */
-    char readVersion(QDataStream &stream) const;
+    char readVersion(QDataStream &stream);
 
 
 };