diff --git a/modules/juce_audio_plugin_client/AU/juce_AU_Wrapper.mm b/modules/juce_audio_plugin_client/AU/juce_AU_Wrapper.mm
index f2277e51bb..6319b0a0d2 100644
--- a/modules/juce_audio_plugin_client/AU/juce_AU_Wrapper.mm
+++ b/modules/juce_audio_plugin_client/AU/juce_AU_Wrapper.mm
@@ -22,6 +22,8 @@
 
   ==============================================================================
 */
+
+#include <juce_core/system/juce_TargetPlatform.h>
 #include <juce_core/system/juce_CompilerWarnings.h>
 #include "../utility/juce_CheckSettingMacros.h"
 
diff --git a/modules/juce_audio_plugin_client/Unity/juce_Unity_Wrapper.cpp b/modules/juce_audio_plugin_client/Unity/juce_Unity_Wrapper.cpp
index f68674f4b8..c9c1831ae6 100644
--- a/modules/juce_audio_plugin_client/Unity/juce_Unity_Wrapper.cpp
+++ b/modules/juce_audio_plugin_client/Unity/juce_Unity_Wrapper.cpp
@@ -23,9 +23,10 @@
   ==============================================================================
 */
 
+#include <juce_core/system/juce_TargetPlatform.h>
+
 #if JucePlugin_Build_Unity
 
-#include <juce_core/system/juce_TargetPlatform.h>
 #include "../utility/juce_IncludeModuleHeaders.h"
 #include <juce_audio_processors/format_types/juce_LegacyAudioParameter.cpp>
 
diff --git a/modules/juce_audio_plugin_client/juce_audio_plugin_client_AU_2.mm b/modules/juce_audio_plugin_client/juce_audio_plugin_client_AU_2.mm
index c068f7b126..58fc62f8a3 100644
--- a/modules/juce_audio_plugin_client/juce_audio_plugin_client_AU_2.mm
+++ b/modules/juce_audio_plugin_client/juce_audio_plugin_client_AU_2.mm
@@ -23,6 +23,8 @@
   ==============================================================================
 */
 
+#include <juce_core/system/juce_TargetPlatform.h>
+
 #if JucePlugin_Build_AU
 
 #include <juce_core/system/juce_CompilerWarnings.h>
diff --git a/modules/juce_audio_plugin_client/juce_audio_plugin_client_Standalone.cpp b/modules/juce_audio_plugin_client/juce_audio_plugin_client_Standalone.cpp
index fcfe4d85ee..98bac49877 100644
--- a/modules/juce_audio_plugin_client/juce_audio_plugin_client_Standalone.cpp
+++ b/modules/juce_audio_plugin_client/juce_audio_plugin_client_Standalone.cpp
@@ -23,6 +23,8 @@
   ==============================================================================
 */
 
+#include <juce_core/system/juce_TargetPlatform.h>
+
 #if JucePlugin_Build_Standalone
 
 #if ! JUCE_MODULE_AVAILABLE_juce_audio_utils