diff --git a/src/libcalamaresui/modulesystem/ModuleManager.h b/src/libcalamaresui/modulesystem/ModuleManager.h
index 20ebffd7e..fc88ef0b5 100644
--- a/src/libcalamaresui/modulesystem/ModuleManager.h
+++ b/src/libcalamaresui/modulesystem/ModuleManager.h
@@ -31,7 +31,7 @@ namespace Calamares
 {
 
 class Module;
-class RequirementEntry;  // from Requirement.h
+struct RequirementEntry;  // from Requirement.h
 
 /**
  * @brief The ModuleManager class is a singleton which manages Calamares modules.