diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5b9f187..6fe003b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -81,13 +81,13 @@ elseif(MSVC)
         -DBUILD_OSG_APPLICATIONS:BOOL=ON
         -DOSG_PLUGIN_SEARCH_INSTALL_DIR_FOR_PLUGINS:BOOL=OFF
         -DACTUAL_3RDPARTY_DIR:PATH=${CMAKE_BINARY_DIR}/${RDPARTY_DIR}
-        -DCURL_INCLUDE_DIR:PATH=${CMAKE_BINARY_DIR}/${RDPARTY_DIR}\include
-        -DTIFF_INCLUDE_DIR:PATH=${CMAKE_BINARY_DIR}/${RDPARTY_DIR}\include
-        -DGDAL_INCLUDE_DIR:PATH=${CMAKE_BINARY_DIR}/${RDPARTY_DIR}\include
-        -DGDAL_LIBRARY:FILEPATH="${CMAKE_BINARY_DIR}/${RDPARTY_DIR}\lib\gdal_i.lib
-        -DTIFF_LIBRARY:FILEPATH=${CMAKE_BINARY_DIR}/${RDPARTY_DIR}\lib\libtiff.lib
-        -DCURL_LIBRARY:FILEPATH=${CMAKE_BINARY_DIR}/${RDPARTY_DIR}\lib\libcurl_imp.lib
-        -DFREETYPE_LIBRARY:FILEPATH=${CMAKE_BINARY_DIR}/${RDPARTY_DIR}\lib\freetype.lib
+        -DCURL_INCLUDE_DIR:PATH=${CMAKE_BINARY_DIR}/${RDPARTY_DIR}/include
+        -DTIFF_INCLUDE_DIR:PATH=${CMAKE_BINARY_DIR}/${RDPARTY_DIR}/include
+        -DGDAL_INCLUDE_DIR:PATH=${CMAKE_BINARY_DIR}/${RDPARTY_DIR}/include
+        -DGDAL_LIBRARY:FILEPATH=${CMAKE_BINARY_DIR}/${RDPARTY_DIR}/lib/gdal_i.lib
+        -DTIFF_LIBRARY:FILEPATH=${CMAKE_BINARY_DIR}/${RDPARTY_DIR}/lib/libtiff.lib
+        -DCURL_LIBRARY:FILEPATH=${CMAKE_BINARY_DIR}/${RDPARTY_DIR}/lib/libcurl_imp.lib
+        -DFREETYPE_LIBRARY:FILEPATH=${CMAKE_BINARY_DIR}/${RDPARTY_DIR}/lib/freetype.lib
     )
 
     # for compatability with MSVC directory layout