diff --git a/dCommon/CMakeLists.txt b/dCommon/CMakeLists.txt
index 13ffc6c97..1354c051b 100644
--- a/dCommon/CMakeLists.txt
+++ b/dCommon/CMakeLists.txt
@@ -31,12 +31,6 @@ add_library(dCommon STATIC ${DCOMMON_SOURCES})
 
 target_link_libraries(dCommon bcrypt dDatabase tinyxml2)
 
-# If using gcc, warn on old-style C casts
-if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
-	set_source_files_properties(${DCOMMON_SOURCES} PROPERTIES COMPILE_FLAGS "-Wold-style-cast")
-endif()
-
-# Handle zlib dependency
 if (UNIX)
 	find_package(ZLIB REQUIRED)
 elseif (WIN32)
diff --git a/dDatabase/CMakeLists.txt b/dDatabase/CMakeLists.txt
index 8bdcea341..20f37becf 100644
--- a/dDatabase/CMakeLists.txt
+++ b/dDatabase/CMakeLists.txt
@@ -14,8 +14,3 @@ endforeach()
 
 add_library(dDatabase STATIC ${DDATABASE_SOURCES})
 target_link_libraries(dDatabase sqlite3 mariadbConnCpp)
-
-# If using gcc, warn on old-style C casts
-if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
-	set_source_files_properties(${DDATABASE_SOURCES} PROPERTIES COMPILE_FLAGS "-Wold-style-cast")
-endif()
diff --git a/dGame/CMakeLists.txt b/dGame/CMakeLists.txt
index 59588b4ab..80f160426 100644
--- a/dGame/CMakeLists.txt
+++ b/dGame/CMakeLists.txt
@@ -63,8 +63,3 @@ endforeach()
 add_library(dGame STATIC ${DGAME_SOURCES})
 
 target_link_libraries(dGame dDatabase Recast Detour)
-
-# If using gcc, warn on old-style C casts
-if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
-	set_source_files_properties(${DGAME_SOURCES} PROPERTIES COMPILE_FLAGS "-Wold-style-cast")
-endif()
diff --git a/dMasterServer/CMakeLists.txt b/dMasterServer/CMakeLists.txt
index ddba5c49a..2161681f8 100644
--- a/dMasterServer/CMakeLists.txt
+++ b/dMasterServer/CMakeLists.txt
@@ -12,8 +12,3 @@ target_link_libraries(MasterServer ${COMMON_LIBRARIES} dMasterServer)
 if(WIN32)
 	add_dependencies(MasterServer WorldServer AuthServer ChatServer)
 endif()
-
-# If using gcc, warn on old-style C casts
-if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
-	set_source_files_properties(${DMASTERSERVER_SOURCES} PROPERTIES COMPILE_FLAGS "-Wold-style-cast")
-endif()
diff --git a/dNavigation/CMakeLists.txt b/dNavigation/CMakeLists.txt
index f94ae4932..4c03d24b2 100644
--- a/dNavigation/CMakeLists.txt
+++ b/dNavigation/CMakeLists.txt
@@ -8,8 +8,3 @@ endforeach()
 
 add_library(dNavigation STATIC ${DNAVIGATION_SOURCES})
 target_link_libraries(dNavigation Detour Recast)
-
-# If using gcc, warn on old-style C casts
-if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
-	set_source_files_properties(${DNAVIGATION_SOURCES} PROPERTIES COMPILE_FLAGS "-Wold-style-cast")
-endif()
diff --git a/dNet/CMakeLists.txt b/dNet/CMakeLists.txt
index 6fb830361..938c04493 100644
--- a/dNet/CMakeLists.txt
+++ b/dNet/CMakeLists.txt
@@ -9,8 +9,3 @@ set(DNET_SOURCES "AuthPackets.cpp"
 
 add_library(dNet STATIC ${DNET_SOURCES})
 target_link_libraries(dNet dCommon dDatabase)
-
-# If using gcc, warn on old-style C casts
-if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
-	set_source_files_properties(${DNET_SOURCES} PROPERTIES COMPILE_FLAGS "-Wold-style-cast")
-endif()
diff --git a/dPhysics/CMakeLists.txt b/dPhysics/CMakeLists.txt
index 0db387821..5fe6adaae 100644
--- a/dPhysics/CMakeLists.txt
+++ b/dPhysics/CMakeLists.txt
@@ -8,8 +8,3 @@ set(DPHYSICS_SOURCES "dpCollisionChecks.cpp"
 
 add_library(dPhysics STATIC ${DPHYSICS_SOURCES})
 target_link_libraries(dPhysics Recast Detour)
-
-# If using gcc, warn on old-style C casts
-if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
-	set_source_files_properties(${DPHYSICS_SOURCES} PROPERTIES COMPILE_FLAGS "-Wold-style-cast")
-endif()
diff --git a/dScripts/CMakeLists.txt b/dScripts/CMakeLists.txt
index a1d5ed44e..ac600dbc2 100644
--- a/dScripts/CMakeLists.txt
+++ b/dScripts/CMakeLists.txt
@@ -52,8 +52,3 @@ foreach(file ${DSCRIPTS_SOURCES_ZONE})
 endforeach()
 
 set(DSCRIPTS_SOURCES ${DSCRIPTS_SOURCES} PARENT_SCOPE)
-
-# If using gcc, warn on old-style C casts
-if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
-	set_source_files_properties(${DSCRIPTS_SOURCES} PROPERTIES COMPILE_FLAGS "-Wold-style-cast")
-endif()
diff --git a/dWorldServer/CMakeLists.txt b/dWorldServer/CMakeLists.txt
index f227fbd4a..c616da878 100644
--- a/dWorldServer/CMakeLists.txt
+++ b/dWorldServer/CMakeLists.txt
@@ -9,7 +9,3 @@ add_executable(WorldServer "WorldServer.cpp")
 target_link_libraries(dWorldServer ${COMMON_LIBRARIES})
 target_link_libraries(WorldServer ${COMMON_LIBRARIES} dChatFilter dGame dZoneManager dPhysics Detour Recast tinyxml2 dWorldServer dNavigation)
 
-# If using gcc, warn on old-style C casts
-if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
-	set_source_files_properties(${DWORLDSERVER_SOURCES} PROPERTIES COMPILE_FLAGS "-Wold-style-cast")
-endif()
diff --git a/dZoneManager/CMakeLists.txt b/dZoneManager/CMakeLists.txt
index cbddc4f3e..bbb22ba7d 100644
--- a/dZoneManager/CMakeLists.txt
+++ b/dZoneManager/CMakeLists.txt
@@ -5,8 +5,3 @@ set(DZONEMANAGER_SOURCES "dZoneManager.cpp"
 
 add_library(dZoneManager STATIC ${DZONEMANAGER_SOURCES})
 target_link_libraries(dZoneManager dPhysics) 
-
-# If using gcc, warn on old-style C casts
-if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
-	set_source_files_properties(${DZONEMANAGER_SOURCES} PROPERTIES COMPILE_FLAGS "-Wold-style-cast")
-endif()