diff --git a/BuildMbedCrypto.cmake b/BuildMbedCrypto.cmake
index e697111..8ae08e3 100644
--- a/BuildMbedCrypto.cmake
+++ b/BuildMbedCrypto.cmake
@@ -86,22 +86,22 @@
     #Inherit the build setting of this project
     CMAKE_ARGS -DCMAKE_BUILD_TYPE=${MBEDCRYPTO_BUILD_TYPE}
     #C compiler settings
-    CMAKE_CACHE_ARGS -DCMAKE_C_COMPILER:string=${CMAKE_C_COMPILER}
-    CMAKE_CACHE_ARGS -DCMAKE_C_COMPILER_ID:string=${CMAKE_C_COMPILER_ID}
-    CMAKE_CACHE_ARGS -DCMAKE_C_FLAGS:string=${MBEDCRYPTO_C_FLAGS}
-    CMAKE_CACHE_ARGS -DCMAKE_C_FLAGS_DEBUG:string=${CMAKE_C_FLAGS_DEBUG}
-    CMAKE_CACHE_ARGS -DCMAKE_C_FLAGS_MINSIZEREL:string=${CMAKE_C_FLAGS_MINSIZEREL}
-    CMAKE_CACHE_ARGS -DCMAKE_C_FLAGS_RELEASE:string=${CMAKE_C_FLAGS_RELEASE}
-    CMAKE_CACHE_ARGS -DCMAKE_C_OUTPUT_EXTENSION:string=.o
-    CMAKE_CACHE_ARGS -DCMAKE_C_COMPILER_WORKS:bool=true
+    CMAKE_CACHE_ARGS -DCMAKE_C_COMPILER:STRING=${CMAKE_C_COMPILER}
+    CMAKE_CACHE_ARGS -DCMAKE_C_COMPILER_ID:STRING=${CMAKE_C_COMPILER_ID}
+    CMAKE_CACHE_ARGS -DCMAKE_C_FLAGS:STRING=${MBEDCRYPTO_C_FLAGS}
+    CMAKE_CACHE_ARGS -DCMAKE_C_FLAGS_DEBUG:STRING=${CMAKE_C_FLAGS_DEBUG}
+    CMAKE_CACHE_ARGS -DCMAKE_C_FLAGS_MINSIZEREL:STRING=${CMAKE_C_FLAGS_MINSIZEREL}
+    CMAKE_CACHE_ARGS -DCMAKE_C_FLAGS_RELEASE:STRING=${CMAKE_C_FLAGS_RELEASE}
+    CMAKE_CACHE_ARGS -DCMAKE_C_OUTPUT_EXTENSION:STRING=.o
+    CMAKE_CACHE_ARGS -DCMAKE_C_COMPILER_WORKS:STRING=true
     #Archiver settings
-    CMAKE_CACHE_ARGS -DCMAKE_AR:string=${CMAKE_AR}
-    CMAKE_CACHE_ARGS -DCMAKE_C_CREATE_STATIC_LIBRARY:internal=${_static_lib_command}
-    CMAKE_CACHE_ARGS -DCMAKE_C_LINK_EXECUTABLE:string=${CMAKE_C_LINK_EXECUTABLE}
-    CMAKE_CACHE_ARGS -DCMAKE_STATIC_LIBRARY_PREFIX_C:string=${CMAKE_STATIC_LIBRARY_PREFIX_C}
-    CMAKE_CACHE_ARGS -DCMAKE_STATIC_LIBRARY_PREFIX_CXX:string=${CMAKE_STATIC_LIBRARY_PREFIX_CXX}
+    CMAKE_CACHE_ARGS -DCMAKE_AR:STRING=${CMAKE_AR}
+    CMAKE_CACHE_ARGS -DCMAKE_C_CREATE_STATIC_LIBRARY:STRING=${_static_lib_command}
+    CMAKE_CACHE_ARGS -DCMAKE_C_LINK_EXECUTABLE:STRING=${CMAKE_C_LINK_EXECUTABLE}
+    CMAKE_CACHE_ARGS -DCMAKE_STATIC_LIBRARY_PREFIX_C:STRING=${CMAKE_STATIC_LIBRARY_PREFIX_C}
+    CMAKE_CACHE_ARGS -DCMAKE_STATIC_LIBRARY_PREFIX_CXX:STRING=${CMAKE_STATIC_LIBRARY_PREFIX_CXX}
     #Install location
-    CMAKE_CACHE_ARGS -DCMAKE_INSTALL_PREFIX:string=${MBEDCRYPTO_INSTALL_DIR}
+    CMAKE_CACHE_ARGS -DCMAKE_INSTALL_PREFIX:STRING=${MBEDCRYPTO_INSTALL_DIR}
     #Place for intermediate build files
     BINARY_DIR ${MBEDCRYPTO_BINARY_DIR})