diff --git a/src/TKService/CMakeLists.txt b/src/TKService/CMakeLists.txt
index 2107f21b64..244d748b4a 100644
--- a/src/TKService/CMakeLists.txt
+++ b/src/TKService/CMakeLists.txt
@@ -4,6 +4,4 @@ OCCT_INCLUDE_CMAKE_FILE (adm/cmake/occt_toolkit)
 
 if (APPLE AND BUILD_USE_PCH)
   set_target_properties(TKService PROPERTIES DISABLE_PRECOMPILE_HEADERS ON)
-else()
-  ADD_PRECOMPILED_HEADER(TKService "${CMAKE_CURRENT_SOURCE_DIR}/TKService_pch.hxx")
 endif()
diff --git a/src/TKService/TKService_pch.hxx b/src/TKService/TKService_pch.hxx
deleted file mode 100644
index 9b9273c4ea..0000000000
--- a/src/TKService/TKService_pch.hxx
+++ /dev/null
@@ -1,21 +0,0 @@
-#ifndef TKSERVICE_PCH_H
-#define TKSERVICE_PCH_H
-
-// Windows-specific headers (for MSVC)
-#ifdef _WIN32
-  #ifndef NOMINMAX
-    #define NOMINMAX
-  #endif
-  #include <tchar.h>   // For Unicode/MBCS mappings
-  #include <windows.h> // For Windows API functions like WideCharToMultiByte
-  #ifdef GetObject
-    #undef GetObject
-  #endif
-#endif
-
-#include <Graphic3d_CStructure.hxx>
-#include <Graphic3d_CView.hxx>
-#include <Graphic3d_Structure.hxx>
-#include <Graphic3d_StructureManager.hxx>
-
-#endif // TKSERVICE_PCH_H
diff --git a/src/TKernel/TKernel_pch.hxx b/src/TKernel/TKernel_pch.hxx
index 14ec7e9b46..7f72876c12 100644
--- a/src/TKernel/TKernel_pch.hxx
+++ b/src/TKernel/TKernel_pch.hxx
@@ -3,7 +3,12 @@
 
 // Standard library headers
 #include <atomic>
+#include <iostream>
+#include <limits>
+#include <ostream>
 #include <random>
+#include <sstream>
+#include <string>
 #include <type_traits>
 
 // Windows-specific headers (for MSVC)