diff --git a/modules/rostests/apitests/ucrtbase/CMakeLists.txt b/modules/rostests/apitests/ucrtbase/CMakeLists.txt
index 58fce55f0cb..84e6b8139c2 100644
--- a/modules/rostests/apitests/ucrtbase/CMakeLists.txt
+++ b/modules/rostests/apitests/ucrtbase/CMakeLists.txt
@@ -5,11 +5,6 @@ list(REMOVE_ITEM INCLUDE_DIRS "${REACTOS_SOURCE_DIR}/sdk/include/crt")
 set_property(DIRECTORY . PROPERTY INCLUDE_DIRECTORIES ${INCLUDE_DIRS})
 include_directories(${REACTOS_SOURCE_DIR}/sdk/include/ucrt)
 
-add_definitions(
-    -DTEST_UCRTBASE
-    -DUSE_WINE_TODOS
-)
-
 list(APPEND SOURCE
     ../crt/_finite.c
     ../crt/_isnan.c
@@ -26,6 +21,7 @@ list(APPEND SOURCE
     ../crt/sin.c
     ../crt/sqrt.c
     ../crt/tan.c
+    ../crt/wctomb.c
     testlist.c
 )
 
@@ -41,6 +37,7 @@ endif()
 
 add_executable(ucrtbase_apitest ${SOURCE} ${ucrtbase_apitest_asm})
 set_module_type(ucrtbase_apitest win32cui)
+target_compile_definitions(ucrtbase_apitest PRIVATE USE_WINE_TODOS TEST_UCRTBASE TEST_DLL_NAME="ucrtbase.dll")
 
 target_link_libraries(ucrtbase_apitest ${PSEH_LIB} chkstk)
 if(NOT MSVC)
@@ -48,5 +45,5 @@ if(NOT MSVC)
     target_link_libraries(ucrtbase_apitest -lgcc)
 endif()
 
-add_importlibs(ucrtbase_apitest ucrtbase kernel32)
+add_importlibs(ucrtbase_apitest ucrtbase kernel32 ntdll)
 add_rostests_file(TARGET ucrtbase_apitest)
diff --git a/modules/rostests/apitests/ucrtbase/testlist.c b/modules/rostests/apitests/ucrtbase/testlist.c
index 98688e966f2..384bb650514 100644
--- a/modules/rostests/apitests/ucrtbase/testlist.c
+++ b/modules/rostests/apitests/ucrtbase/testlist.c
@@ -18,6 +18,7 @@ extern void func_setjmp(void);
 extern void func_sin(void);
 extern void func_sqrt(void);
 extern void func_tan(void);
+extern void func_wctomb(void);
 
 
 const struct test winetest_testlist[] =
@@ -37,6 +38,7 @@ const struct test winetest_testlist[] =
     { "sin", func_sin },
     { "sqrt", func_sqrt },
     { "tan", func_tan },
+    { "wctomb", func_wctomb },
 
     { 0, 0 }
 };