diff --git a/cmake/jkqtplotter_deployqt.cmake b/cmake/jkqtplotter_deployqt.cmake
index ac1f937865..a5a0da526c 100644
--- a/cmake/jkqtplotter_deployqt.cmake
+++ b/cmake/jkqtplotter_deployqt.cmake
@@ -11,17 +11,6 @@ function(jkqtplotter_deployqt TARGET_NAME)
         endif()        
 
 
-        if(${QT_VERSION_MAJOR} VERSION_GREATER_EQUAL "6")
-          set(WINDEPLOYQTOPTION "")
-          set(WINDEPLOYQTPACKAGES "")
-        else()
-          set(WINDEPLOYQTOPTION "--release --compiler-runtime")
-          if (CMAKE_BUILD_TYPE STREQUAL "Debug")
-              set(WINDEPLOYQTOPTION "--debug --compiler-runtime")
-          endif()
-          set(WINDEPLOYQTPACKAGES "-xml -printsupport -svg -opengl")
-        endif()
-
 
         # install system runtime lib
         include( InstallRequiredSystemLibraries )
@@ -31,7 +20,7 @@ function(jkqtplotter_deployqt TARGET_NAME)
 
         get_filename_component(CMAKE_CXX_COMPILER_BINPATH ${CMAKE_CXX_COMPILER} DIRECTORY )
         add_custom_command(TARGET ${TARGET_NAME} POST_BUILD
-            COMMAND "${WINDEPLOYQT_ENV_SETUP}" && "${WINDEPLOYQT_EXECUTABLE}" ${WINDEPLOYQTOPTION} ${WINDEPLOYQTPACKAGES} \"$<TARGET_FILE:${TARGET_NAME}>\"
+            COMMAND "${WINDEPLOYQT_ENV_SETUP}" && "${WINDEPLOYQT_EXECUTABLE}" \"$<TARGET_FILE:${TARGET_NAME}>\"
             COMMENT "Running windeployqt ... "
         )
     endif(WIN32)
diff --git a/lib/jkqtcommon/jkqttools.cpp b/lib/jkqtcommon/jkqttools.cpp
index cfd8ab54f6..59c95d43b8 100644
--- a/lib/jkqtcommon/jkqttools.cpp
+++ b/lib/jkqtcommon/jkqttools.cpp
@@ -274,6 +274,6 @@ quint16 jkqtp_checksum(const void *data, size_t len)
 #if QT_VERSION>=QT_VERSION_CHECK(6,0,0)
     return qChecksum(QByteArrayView(static_cast<const uint8_t*>(data), len));
 #else
-    return qChecksum(data, len);
+    return qChecksum(static_cast<const char*>(data), len);
 #endif
 }