diff --git a/build/cmake/functions.cmake b/build/cmake/functions.cmake
index 8d4dc94511..00e3ed09e1 100644
--- a/build/cmake/functions.cmake
+++ b/build/cmake/functions.cmake
@@ -282,11 +282,6 @@ macro(wx_add_library name)
         # collect all source files for mono library
         set(wxMONO_SRC_FILES ${wxMONO_SRC_FILES} ${src_files} PARENT_SCOPE)
     else()
-
-        if(wxBUILD_PRECOMP AND MSVC)
-            # Add dummy source file to be used by cotire for PCH creation
-            list(INSERT src_files 0 "${wxSOURCE_DIR}/src/common/dummy.cpp")
-        endif()
         list(APPEND src_files ${wxSETUP_HEADER_FILE})
 
         if(wxBUILD_SHARED)
@@ -348,7 +343,7 @@ macro(wx_finalize_lib target_name)
     set(wxLIB_TARGETS ${wxLIB_TARGETS} PARENT_SCOPE)
     if(wxBUILD_PRECOMP)
         if(TARGET ${target_name})
-        wx_target_enable_precomp(${target_name} "${wxSOURCE_DIR}/include/wx/wxprec.h")
+            wx_target_enable_precomp(${target_name} "${wxSOURCE_DIR}/include/wx/wxprec.h")
         endif()
     elseif(MSVC)
         wx_lib_compile_definitions(${target_name} PRIVATE NOPCH)
@@ -765,10 +760,6 @@ function(wx_add_test name)
             list(APPEND test_src ${wxSOURCE_DIR}/tests/${res})
         endforeach()
     endif()
-    if(wxBUILD_PRECOMP AND MSVC)
-        # Add dummy source file to be used by cotire for PCH creation
-        list(INSERT test_src 0 "${wxSOURCE_DIR}/tests/dummy.cpp")
-    endif()
     add_executable(${name} ${test_src})
     target_include_directories(${name} PRIVATE "${wxSOURCE_DIR}/tests" "${wxSOURCE_DIR}/3rdparty/catch/include")
     wx_exe_link_libraries(${name} base)