diff --git a/windows1809/cuda-devel/Dockerfile b/windows1809/cuda-devel/Dockerfile
index 37bcbba84ff79c07e062c1bd882de64330dbdd1c..3f92efc34eb578af550cd82461a1e42b8787c2d2 100644
--- a/windows1809/cuda-devel/Dockerfile
+++ b/windows1809/cuda-devel/Dockerfile
@@ -37,7 +37,7 @@ RUN cd $env:VCPKG_DIR; \
         "\"opencv3[cuda,ffmpeg,ximea,opengl,contrib,ipp,dnn]\"" \
         "\"mxnet[cpp,opencv,cuda,cudnn]\""; \
     [Environment]::SetEnvironmentVariable('VCPKG_TRIPLET', "\"$vcpkg_triplet\"", [EnvironmentVariableTarget]::Machine); \
-    [Environment]::SetEnvironmentVariable('CMAKE_TOOLCHAIN_FILE', "/vcpkg/scripts/buildsystems/vcpkg.cmake", [EnvironmentVariableTarget]::Machine); \
+    [Environment]::SetEnvironmentVariable('CMAKE_TOOLCHAIN_FILE', "\"/vcpkg/scripts/buildsystems/vcpkg.cmake\"", [EnvironmentVariableTarget]::Machine); \
     [Environment]::SetEnvironmentVariable('VCPKG_TARGET_TRIPLET', "\"$vcpkg_triplet\"", [EnvironmentVariableTarget]::Machine); \
     [Environment]::SetEnvironmentVariable('VCPKG_INSTALL_DIR', "\"$env:VCPKG_DIR/installed/$vcpkg_triplet\"", [EnvironmentVariableTarget]::Machine); \
     Remove-Item -Force -Recurse ./downloads; \
diff --git a/windows1809/devel/Dockerfile b/windows1809/devel/Dockerfile
index 9cd0f5760a61b1e83a00cf9eccaf8efa2db6b184..053b086799f543b516581af31696246b056ae9b1 100644
--- a/windows1809/devel/Dockerfile
+++ b/windows1809/devel/Dockerfile
@@ -26,7 +26,7 @@ RUN cd $env:VCPKG_DIR; \
         "\"opencv3[ffmpeg,ximea,opengl,contrib,ipp,dnn]\"" \
         "\"mxnet[cpp,opencv]\""; \
     [Environment]::SetEnvironmentVariable('VCPKG_TRIPLET', "\"$vcpkg_triplet\"", [EnvironmentVariableTarget]::Machine); \
-    [Environment]::SetEnvironmentVariable('CMAKE_TOOLCHAIN_FILE', "/vcpkg/scripts/buildsystems/vcpkg.cmake", [EnvironmentVariableTarget]::Machine); \
+    [Environment]::SetEnvironmentVariable('CMAKE_TOOLCHAIN_FILE', "\"/vcpkg/scripts/buildsystems/vcpkg.cmake\"", [EnvironmentVariableTarget]::Machine); \
     [Environment]::SetEnvironmentVariable('VCPKG_TARGET_TRIPLET', "\"$vcpkg_triplet\"", [EnvironmentVariableTarget]::Machine); \
     [Environment]::SetEnvironmentVariable('VCPKG_INSTALL_DIR', "\"$env:VCPKG_DIR/installed/$vcpkg_triplet\"", [EnvironmentVariableTarget]::Machine); \
     Remove-Item -Force -Recurse ./downloads; \