diff --git a/ports/clblas/CONTROL b/ports/clblas/CONTROL
index 3e8543409..bd4d8a552 100644
--- a/ports/clblas/CONTROL
+++ b/ports/clblas/CONTROL
@@ -1,4 +1,4 @@
 Source: clblas
-Version: 2.12-3
+Version: 2.12-4
 Build-Depends: opencl
 Description: clBLAS is an OpenCL 1.2 accelerated BLAS (Basic Linear Algebra Subsystem) library.
diff --git a/ports/clblas/Fix-BuildDLL.patch b/ports/clblas/Fix-BuildDLL.patch
new file mode 100644
index 000000000..f717c28dc
--- /dev/null
+++ b/ports/clblas/Fix-BuildDLL.patch
@@ -0,0 +1,16 @@
+diff --git a/src/library/CMakeLists.txt b/src/library/CMakeLists.txt
+index f2d5a88..8f84133 100644
+--- a/src/library/CMakeLists.txt
++++ b/src/library/CMakeLists.txt
+@@ -910,11 +910,6 @@ endif( )
+ 
+ include( InstallRequiredSystemLibraries )
+ 
+-# Install necessary runtime files for debug builds
+-install(    PROGRAMS ${CMAKE_INSTALL_SYSTEM_RUNTIME_LIBS}
+-            CONFIGURATIONS Debug
+-            DESTINATION ${CLBLAS_RUNTIME_DESTINATION} )
+-
+ # Install all *.pdb files for debug builds
+ install(    DIRECTORY ${PROJECT_BINARY_DIR}/staging/
+             DESTINATION ${CLBLAS_RUNTIME_DESTINATION}
diff --git a/ports/clblas/portfile.cmake b/ports/clblas/portfile.cmake
index 97bd7c936..eeeb71c3f 100644
--- a/ports/clblas/portfile.cmake
+++ b/ports/clblas/portfile.cmake
@@ -1,5 +1,3 @@
-include(vcpkg_common_functions)
-
 vcpkg_from_github(
     OUT_SOURCE_PATH SOURCE_PATH
     REPO clMathLibraries/clBLAS
@@ -8,6 +6,7 @@ vcpkg_from_github(
     HEAD_REF master
     PATCHES
         cmake.patch
+        Fix-BuildDLL.patch
 )
 
 # v2.12 has a very old FindOpenCL.cmake using OPENCL_ vs. OpenCL_ var names
@@ -37,9 +36,6 @@ if(VCPKG_TARGET_IS_WINDOWS)
         ${CURRENT_PACKAGES_DIR}/debug/bin/clBLAS-tune.pdb
         ${CURRENT_PACKAGES_DIR}/debug/bin/clBLAS-tune.exe
         ${CURRENT_PACKAGES_DIR}/bin/clBLAS-tune.exe
-        ${CURRENT_PACKAGES_DIR}/debug/bin/concrt140d.dll
-        ${CURRENT_PACKAGES_DIR}/debug/bin/msvcp140d.dll
-        ${CURRENT_PACKAGES_DIR}/debug/bin/vcruntime140d.dll
     )
 endif()