diff --git a/extras/Introjucer/Source/Project/jucer_Module.cpp b/extras/Introjucer/Source/Project/jucer_Module.cpp
index 3dea365928..b72d780d25 100644
--- a/extras/Introjucer/Source/Project/jucer_Module.cpp
+++ b/extras/Introjucer/Source/Project/jucer_Module.cpp
@@ -333,6 +333,11 @@ void LibraryModule::prepareExporter (ProjectExporter& exporter, ProjectSaver& pr
 
     exporter.addToExtraSearchPaths (exporter.getModuleFolderRelativeToProject (getID(), projectSaver).getParentDirectory());
 
+    const String extraDefs (moduleInfo.getPreprocessorDefs().trim());
+
+    if (extraDefs.isNotEmpty())
+        exporter.getExporterPreprocessorDefs() = exporter.getExporterPreprocessorDefsString() + "\n" + extraDefs;
+
     {
         Array<File> compiled;
         findAndAddCompiledCode (exporter, projectSaver, moduleInfo.getFolder(), compiled);
diff --git a/extras/Introjucer/Source/Project/jucer_Module.h b/extras/Introjucer/Source/Project/jucer_Module.h
index e6d5ccffdc..452f752ef2 100644
--- a/extras/Introjucer/Source/Project/jucer_Module.h
+++ b/extras/Introjucer/Source/Project/jucer_Module.h
@@ -45,6 +45,7 @@ struct ModuleDescription
     String getDescription() const       { return moduleInfo [Ids::description].toString(); }
     String getLicense() const           { return moduleInfo [Ids::license].toString(); }
     String getHeaderName() const        { return moduleInfo [Ids::include].toString(); }
+    String getPreprocessorDefs() const  { return moduleInfo [Ids::defines].toString(); }
 
     File getFolder() const              { jassert (manifestFile != File::nonexistent); return manifestFile.getParentDirectory(); }