diff --git a/Code/Tools/ProjectManager/Source/GemCatalog/GemCatalogScreen.h b/Code/Tools/ProjectManager/Source/GemCatalog/GemCatalogScreen.h
index dcdf6373ac..2deaa41b9e 100644
--- a/Code/Tools/ProjectManager/Source/GemCatalog/GemCatalogScreen.h
+++ b/Code/Tools/ProjectManager/Source/GemCatalog/GemCatalogScreen.h
@@ -17,6 +17,7 @@
 #include <QString>
 #endif
 
+QT_FORWARD_DECLARE_CLASS(QVBoxLayout)
 QT_FORWARD_DECLARE_CLASS(QStackedWidget)
 
 namespace O3DE::ProjectManager