diff --git a/CMakeLists.txt b/CMakeLists.txt
index d39b5e8..e94640c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -103,7 +103,7 @@ if (UNIX AND NOT MINGW)
                 DESTINATION yerbacon/${CMAKE_INSTALL_BINDIR})
     endif()
 elseif(MINGW OR MSVC)
-    set(CMAKE_INSTALL_PREFIX "C:\\\\progs\\${PROJECT_NAME}")
+    set(CMAKE_INSTALL_PREFIX "C:\\progs\\${PROJECT_NAME}")
     set(CPACK_NSIS_INSTALL_ROOT "${CMAKE_INSTALL_PREFIX}")
     set(CMAKE_EXE_LINKER_FLAGS "-static -static-libstdc++ ${CMAKE_EXE_LINKER_FLAGS}")
     set(CPACK_PACKAGE_FILE_NAME "${PNAME}_wpkg")