diff --git a/toolchain-mingw32.cmake b/toolchain-mingw32.cmake
index 655e910bd99..8126c944e28 100644
--- a/toolchain-mingw32.cmake
+++ b/toolchain-mingw32.cmake
@@ -3,9 +3,9 @@ set(ARCH i386)
 
 # Choose the right MinGW prefix
 if (CMAKE_HOST_SYSTEM_NAME MATCHES Windows)
-set(MINGW_PREFIX "")
+set(MINGW_PREFIX "" CACHE STRING "MinGW Prefix")
 else()
-set(MINGW_PREFIX "mingw32-")
+set(MINGW_PREFIX "mingw32-" CACHE STRING "MinGW Prefix")
 endif()
 
 # the name of the target operating system
@@ -19,7 +19,7 @@ SET(CMAKE_RC_COMPILER ${MINGW_PREFIX}windres)
 SET(CMAKE_ASM_COMPILER ${MINGW_PREFIX}gcc)
 SET(CMAKE_ASM_COMPILE_OBJECT "<CMAKE_ASM_COMPILER> -x assembler-with-cpp -o <OBJECT> <FLAGS> <DEFINES> -D__ASM__ -c <SOURCE>")
 
-SET(CMAKE_RC_COMPILE_OBJECT "<CMAKE_RC_COMPILER> -i <SOURCE> <CMAKE_C_LINK_FLAGS> <DEFINES> -I${REACTOS_SOURCE_DIR}/include/psdk -I${REACTOS_BINARY_DIR}/include/psdk -I${REACTOS_SOURCE_DIR}/include/ -I${REACTOS_SOURCE_DIR}/include/reactos -I${REACTOS_BINARY_DIR}/include/reactos -I${REACTOS_SOURCE_DIR}/include/crt/mingw32 -O coff -o <OBJECT> ")
+SET(CMAKE_RC_COMPILE_OBJECT "<CMAKE_RC_COMPILER> -i <SOURCE> <CMAKE_C_LINK_FLAGS> <DEFINES> -I${REACTOS_SOURCE_DIR}/include/psdk -I${REACTOS_BINARY_DIR}/include/psdk -I${REACTOS_SOURCE_DIR}/include/ -I${REACTOS_SOURCE_DIR}/include/reactos -I${REACTOS_BINARY_DIR}/include/reactos -I${REACTOS_SOURCE_DIR}/include/reactos/wine -I${REACTOS_SOURCE_DIR}/include/crt/mingw32 -O coff -o <OBJECT> ")
 
 # Use stdcall fixups, and don't link with anything by default unless we say so
 set(CMAKE_C_STANDARD_LIBRARIES -lgcc CACHE STRING "libgcc") # We should add the environment libgcc here