diff --git a/platformLibs/src/platform/ios/objc.def b/platformLibs/src/platform/ios/objc.def
index 20d1b81ca04..614953bfb0d 100644
--- a/platformLibs/src/platform/ios/objc.def
+++ b/platformLibs/src/platform/ios/objc.def
@@ -6,7 +6,7 @@ headers = objc/NSObjCRuntime.h objc/NSObject.h objc/message.h objc/objc-api.h \
 
 headerFilter = objc/**
 
-compilerOpts = -D_XOPEN_SOURCE
+compilerOpts = -D_XOPEN_SOURCE -DOBJC_OLD_DISPATCH_PROTOTYPES=1
 linkerOpts = -lobjc
 
 ---
diff --git a/platformLibs/src/platform/osx/objc.def b/platformLibs/src/platform/osx/objc.def
index 3a7b04e0c72..03b85242c2b 100644
--- a/platformLibs/src/platform/osx/objc.def
+++ b/platformLibs/src/platform/osx/objc.def
@@ -7,7 +7,7 @@ headers = objc/List.h objc/NSObjCRuntime.h objc/NSObject.h objc/Object.h objc/Pr
     objc/objc-sync.h objc/objc.h objc/runtime.h
 
 headerFilter = objc/**
-compilerOpts = -D_XOPEN_SOURCE
+compilerOpts = -D_XOPEN_SOURCE -DOBJC_OLD_DISPATCH_PROTOTYPES=1
 excludedFunctions = KERNEL_AUDIT_TOKEN KERNEL_SECURITY_TOKEN
 
 linkerOpts = -lobjc
diff --git a/platformLibs/src/platform/tvos/objc.def b/platformLibs/src/platform/tvos/objc.def
index 20d1b81ca04..614953bfb0d 100644
--- a/platformLibs/src/platform/tvos/objc.def
+++ b/platformLibs/src/platform/tvos/objc.def
@@ -6,7 +6,7 @@ headers = objc/NSObjCRuntime.h objc/NSObject.h objc/message.h objc/objc-api.h \
 
 headerFilter = objc/**
 
-compilerOpts = -D_XOPEN_SOURCE
+compilerOpts = -D_XOPEN_SOURCE -DOBJC_OLD_DISPATCH_PROTOTYPES=1
 linkerOpts = -lobjc
 
 ---
diff --git a/platformLibs/src/platform/watchos/objc.def b/platformLibs/src/platform/watchos/objc.def
index 20d1b81ca04..614953bfb0d 100644
--- a/platformLibs/src/platform/watchos/objc.def
+++ b/platformLibs/src/platform/watchos/objc.def
@@ -6,7 +6,7 @@ headers = objc/NSObjCRuntime.h objc/NSObject.h objc/message.h objc/objc-api.h \
 
 headerFilter = objc/**
 
-compilerOpts = -D_XOPEN_SOURCE
+compilerOpts = -D_XOPEN_SOURCE -DOBJC_OLD_DISPATCH_PROTOTYPES=1
 linkerOpts = -lobjc
 
 ---