--- a/OrthancServer/CMakeLists.txt	Wed Apr 12 17:56:13 2023 +0200
+++ b/OrthancServer/CMakeLists.txt	Wed Apr 12 18:04:24 2023 +0200
@@ -337,6 +337,8 @@
 # headers might get broken!
 
 if (MSVC)
+  add_definitions(-DORTHANC_USE_PRECOMPILED_HEADERS=1)
+  
   set(TMP
     ${ORTHANC_CORE_SOURCES_INTERNAL}
     ${ORTHANC_DICOM_SOURCES_INTERNAL}
@@ -376,13 +378,6 @@
   ${AUTOGENERATED_SOURCES}
   )
 
-if (MSVC)
-  set_target_properties(
-    CoreLibrary
-    PROPERTIES COMPILE_DEFINITIONS "ORTHANC_USE_PRECOMPILED_HEADERS=1"
-    )
-endif()
-
 add_dependencies(CoreLibrary AutogeneratedTarget)
 
 if (LIBICU_LIBRARIES)
@@ -424,13 +419,6 @@
   ${ORTHANC_SERVER_SOURCES}
   )
 
-if (MSVC)
-  set_target_properties(
-    ServerLibrary
-    PROPERTIES COMPILE_DEFINITIONS "ORTHANC_USE_PRECOMPILED_HEADERS=1"
-    )
-endif()
-
 # Ensure autogenerated code is built before building ServerLibrary
 add_dependencies(ServerLibrary CoreLibrary OrthancDatabaseProtobuf)
 
@@ -469,13 +457,6 @@
   ${BOOST_EXTENDED_SOURCES}
   )
 
-if (MSVC)
-  set_target_properties(
-    UnitTests
-    PROPERTIES COMPILE_DEFINITIONS "ORTHANC_USE_PRECOMPILED_HEADERS=1"
-    )
-endif()
-
 target_link_libraries(UnitTests
   ServerLibrary
   CoreLibrary